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<p style="margin:0in 0in .0001pt;text-align:center;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">As filed
with the Securities and Exchange Commission on October&nbsp;2, 2009.</font></b></p>

<p align="right" style="margin:0in 0in .0001pt;text-align:right;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Registration
No.&nbsp;333-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font></b></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

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<p style="border:none;margin:0in 0in .0001pt;padding:0in;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>

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<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">UNITED
STATES</font></b><b><font size="5" style="font-size:18.0pt;font-weight:bold;"><br>
</font></b><b><font size="5" style="font-size:18.0pt;font-weight:bold;">SECURITIES AND EXCHANGE COMMISSION</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Washington,
D.C. 20549</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<div align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><hr size="1" width="25%" noshade color="black" align="center"></div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">FORM&nbsp;S-8</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<p align="center" style="font-size:12.0pt;margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">REGISTRATION STATEMENT</font></b><b><br>
</b><b>UNDER</b><b><br>
</b><b>THE
SECURITIES ACT OF 1933</b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<div align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><hr size="1" width="25%" noshade color="black" align="center"></div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">AMERICAN
SCIENCE AND ENGINEERING, INC.</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact name of
registrant as specified in its charter)</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="50%" valign="bottom" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Massachusetts</font></b></p>
  </td>
  <td width="50%" valign="bottom" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">04-2240991</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="bottom" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or other
  jurisdiction of<br>
  incorporation or organization)</font></p>
  </td>
  <td width="50%" valign="bottom" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(I.R.S. Employer<br>
  Identification No.)</font></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="bottom" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="50%" valign="bottom" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="bottom" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">829
  Middlesex Turnpike</font></b><font size="2" style="font-size:10.0pt;"><br>
  <b>Billerica, Massachusetts</b></font></p>
  </td>
  <td width="50%" valign="bottom" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">01821</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="bottom" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address of
  principal executive offices)</font></p>
  </td>
  <td width="50%" valign="bottom" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Zip Code)</font></p>
  </td>
 </tr>
</table>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<div align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><hr size="1" width="25%" noshade color="black" align="center"></div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">AMERICAN
SCIENCE AND ENGINEERING, INC.</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">2005
EQUITY AND INCENTIVE PLAN</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Full title of the
plan)</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<div align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><hr size="1" width="25%" noshade color="black" align="center"></div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Patricia
A. Gray, Senior Vice President and General Counsel</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">American
Science and Engineering,&nbsp;Inc.</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">829
Middlesex Turnpike</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Billerica,
MA 01821</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">(978)
262-8700</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Name, address and
telephone number, including area code, of agent for service)</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<div align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><hr size="1" width="25%" noshade color="black" align="center"></div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.55in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Indicate by check mark
whether the registrant is a large accelerated filer, an accelerated filer, a
non-accelerated filer, or a smaller reporting company. See definitions of
&#147;large accelerated filer,&#148; &#147;accelerated filer,&#148; and &#147;smaller reporting company&#148;
in Rule&nbsp;12b-2 of the Exchange Act. (Check one):</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Large
  accelerated filer&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>
  </td>
  <td width="50%" valign="bottom" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Accelerated
  filer&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">x</font></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="50%" valign="bottom" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Non-accelerated
  filer&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>
  </td>
  <td width="50%" valign="bottom" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Smaller
  reporting company&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Do not check if
  a smaller reporting company)</font></p>
  </td>
  <td width="50%" valign="bottom" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
</table>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<div align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><hr size="1" width="25%" noshade color="black" align="center"></div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">CALCULATION
OF REGISTRATION FEE</font></b></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<table border="1" cellspacing="0" cellpadding="0" width="100%" style="border:none;border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="40%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:40.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Title&nbsp;of&nbsp;Each&nbsp;Class&nbsp;of</font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;"><br>
  </font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;">Securities&nbsp;to&nbsp;be</font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;"><br>
  </font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;">Registered</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:2.5%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="12%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:12.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Amount&nbsp;to</font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;"><br>
  </font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;">be</font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;"><br>
  </font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;">Registered (1)</font></b></p>
  </td>
  <td width="3%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:3.5%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="12%" colspan="2" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:12.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Proposed</font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;"><br>
  </font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;">Maximum</font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;"><br>
  </font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;">Offering Price</font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;"><br>
  </font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;">Per&nbsp;Share&nbsp;(3)</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:2.5%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="12%" colspan="2" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:12.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Proposed</font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;"><br>
  </font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;">Maximum</font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;"><br>
  </font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;">Aggregate</font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;"><br>
  </font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;">Offering&nbsp;Price (3)</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:2.5%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="12%" colspan="2" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:12.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Amount&nbsp;of</font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;"><br>
  </font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;">Registration</font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;"><br>
  </font></b><b><font size="1" style="font-size:8.0pt;font-weight:bold;">Fee</font></b></p>
  </td>
  <td width="1%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:1.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="40%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:40.0%;">
  <p style="margin:0in 0in .0001pt 10.0pt;text-autospace:none;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Common
  Stock, $.66 2/3 par value per share, including the associated Series&nbsp;A
  Preferred Stock purchase rights</font></p>
  </td>
  <td width="2%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:2.5%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="12%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:12.0%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">250,000 shares </font></p>
  </td>
  <td width="3%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:3.5%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;(2)</font></p>
  </td>
  <td width="1%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:1.3%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">$</font></p>
  </td>
  <td width="10%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:10.7%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">67.95</font></p>
  </td>
  <td width="2%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:2.5%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="1%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:1.3%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">$</font></p>
  </td>
  <td width="10%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:10.7%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">16,987,500</font></p>
  </td>
  <td width="2%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:2.5%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="1%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:1.3%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">$</font></p>
  </td>
  <td width="10%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:10.7%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">947.90</font></p>
  </td>
  <td width="1%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:1.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr height="0">
  <td width="299" style="border:none;"></td>
  <td width="19" style="border:none;"></td>
  <td width="90" style="border:none;"></td>
  <td width="26" style="border:none;"></td>
  <td width="10" style="border:none;"></td>
  <td width="80" style="border:none;"></td>
  <td width="19" style="border:none;"></td>
  <td width="10" style="border:none;"></td>
  <td width="80" style="border:none;"></td>
  <td width="19" style="border:none;"></td>
  <td width="10" style="border:none;"></td>
  <td width="80" style="border:none;"></td>
  <td width="7" style="border:none;"></td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(1)&nbsp;Pursuant to Rule&nbsp;416(a)&nbsp;under
the Securities Act of 1933, as amended (the &#147;Securities Act&#148;), this
registration statement shall be deemed to cover such additional number of
shares of American Science and Engineering,&nbsp;Inc. common stock as may be
offered or issued to prevent dilution resulting from stock splits, stock
dividends, or similar transactions.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(2)&nbsp;Consists of
shares issuable pursuant to the American Science and Engineering,&nbsp;Inc.
2005 Equity and Incentive Plan.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(3)&nbsp;Pursuant to Rules&nbsp;457(c)&nbsp;and
457(h)(1)&nbsp;under the Securities Act, the proposed maximum offering price
per share and the maximum aggregate offering price for the shares have been
calculated solely for the purpose of computing the registration fee on the
basis of the average of the high and low prices of American Science and
Engineering,&nbsp;Inc. common stock as reported on the Nasdaq Global Market on September&nbsp;30,
2009, which were $69.00 and $66.89, respectively.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<div style="border-bottom:solid windowtext 3.0pt;border-left:none;border-right:none;border-top:solid windowtext 1.0pt;padding:1.0pt 0in 1.0pt 0in;">

<p style="border:none;margin:0in 0in .0001pt;padding:0in;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>

</div>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="1" face="Times New Roman" style="font-size:7.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;text-autospace:none;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>

</div>
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<div>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:ideograph-numeric ideograph-other;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">STATEMENT
OF INCORPORATION BY REFERENCE</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:ideograph-numeric ideograph-other;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:ideograph-numeric ideograph-other;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Except as
otherwise set forth below, this registration statement incorporates by
reference the contents of the registration statement on Form&nbsp;S-8, File No.&nbsp;333-129851
filed with the Securities and Exchange Commission (the &#147;Commission&#148;) by
American Science and Engineering,&nbsp;Inc. (the &#147;Registrant&#148;) on November&nbsp;21,
2005, relating to Registrant&#146;s 2005 Equity and Incentive Plan (the &#147;2005 Plan&#148;)
and the registration statement on Form&nbsp;S-8, File No.&nbsp;333-155215 filed
with the Commission by Registrant on November&nbsp;7, 2008, relating to the
2005 Plan.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:ideograph-numeric ideograph-other;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">PART&nbsp;II</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">INFORMATION
REQUIRED IN THE REGISTRATION STATEMENT</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 3.&nbsp; Incorporation of
Documents by Reference.</font></b></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Registrant is subject to the informational and reporting requirements
of Sections 13(a), 14, and 15(d)&nbsp;of the Securities Exchange Act of 1934, as
amended (the &#147;Exchange Act&#148;), and in accordance therewith files reports, proxy
statements and other information with the Commission.&#160;&#160; The following documents, which are on file
with the Commission, are incorporated in this registration statement by reference
(excluding any portions of such documents that have been &#147;furnished&#148; but not
&#147;filed&#148; for purposes of the Exchange Act):</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt .5in;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; Registrant&#146;s latest annual report
filed pursuant to Section&nbsp;13(a)&nbsp;or 15(d)&nbsp;of the Exchange Act or
the latest prospectus filed pursuant to Rule&nbsp;424(b)&nbsp;under the
Securities Act that contains audited financial statements for Registrant&#146;s
latest fiscal year for which such statements have been filed.</font></p>

<p style="margin:0in 0in .0001pt .5in;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt .5in;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; All other reports filed pursuant to Section&nbsp;13(a)&nbsp;or
15(d)&nbsp;of the Exchange Act since the end of the fiscal year covered by the
document referred to in (a)&nbsp;above.</font></p>

<p style="margin:0in 0in .0001pt .5in;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt .5in;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(c)&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; The description of the securities
contained in Registrant&#146;s registration statements on Form&nbsp;8-A filed under
the Exchange Act, including any amendment or report filed for the purpose of
updating such description.</font></p>

<p style="margin:0in 0in .0001pt .5in;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">All documents subsequently filed by Registrant pursuant to Sections
13(a), 13(c), 14 and 15(d)&nbsp;of the Exchange Act, prior to the filing of a
post-effective amendment which indicates that all securities offered hereby
have been sold or which deregisters all securities then remaining unsold, shall
be deemed to be incorporated by reference in this registration statement and to
be part hereof from the date of the filing of such documents.&#160; Any statement contained in a document
incorporated or deemed to be incorporated by reference herein shall be deemed
to be modified or superseded for the purposes of this registration statement to
the extent that a statement contained herein or in any other subsequently filed
document which also is or is deemed to be incorporated by reference herein
modifies or supersedes such statement.&#160;
Any statement so modified or superseded shall not be deemed, except as
so modified or superseded, to constitute a part of this registration statement.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item
5.&nbsp; Interests of Named Experts and Counsel.</font></b></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Wilmer Cutler Pickering
Hale and Dorr LLP has opined as to the legality of the securities being offered
by this registration statement.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item
8.&nbsp; Exhibits.</font></b></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The Exhibit&nbsp;Index immediately following the signature page&nbsp;is
incorporated herein by reference.</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2</font></p>

<div style="margin:0in 0in .0001pt;text-autospace:none;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>

</div>
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<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SIGNATURES
AND POWERS OF ATTORNEY</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to the
requirements of the Securities Act of 1933, the Registrant certifies that it
has reasonable grounds to believe that it meets all of the requirements for
filing on Form&nbsp;S-8 and has duly caused this registration statement to be
signed on its behalf by the undersigned, thereunto duly authorized, in the Town
of Billerica, Commonwealth of Massachusetts, on October&nbsp;2, 2009.</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.6%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="50%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:50.4%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">AMERICAN SCIENCE AND
  ENGINEERING, INC.</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.6%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="44%" valign="top" style="padding:0in 0in 0in 0in;width:44.16%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.6%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="44%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:44.16%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ ANTHONY R. FABIANO</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.6%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Name:</font></p>
  </td>
  <td width="44%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:44.16%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Anthony R. Fabiano</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.6%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="6%" valign="top" style="padding:0in 0in 0in 0in;width:6.24%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Title:</font></p>
  </td>
  <td width="44%" valign="top" style="padding:0in 0in 0in 0in;width:44.16%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">President and Chief
  Executive Officer</font></p>
  </td>
 </tr>
</table>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">POWER
OF ATTORNEY AND SIGNATURES</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Further, we, the
undersigned officers and directors of the Registrant hereby severally
constitute and appoint Kenneth J. Galaznik and Patricia A. Gray, and each of
them singly, our true and lawful attorneys with full power to them, and each of
them singly, to sign for us and in our names in the capacities as indicated,
the registration statement on Form&nbsp;S-8 filed herewith and any and all
amendments or supplements to such registration statement, and generally to do
all such things in connection therewith in our name and on our behalf in our
capacities as indicated to enable the Registrant to comply with the provisions
of the Securities Act of 1933, as amended, and all requirements of the
Securities and Exchange Commission, hereby ratifying and confirming our
signatures as they may be signed by our said attorneys, or any of them, to said
registration statement and any and all amendments thereto.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to the
requirements of the Securities Act of 1933, this registration statement has
been signed by the following persons in the capacities indicated on October&nbsp;2,
2009.</font></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="48%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ ANTHONY R. FABIANO</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Director and President
  and Chief Executive Officer</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Anthony R. Fabiano</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Principal Executive
  Officer)</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ KENNETH J.GALAZNIK</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chief Financial Officer
  and Treasurer</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Kenneth J. Galaznik</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Principal Financial
  Officer)</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ DENIS R. BROWN</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chairman of the Board,
  Director</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Denis R. Brown</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ JOHN A. GORDON</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Director</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">John A. Gordon</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ HAMILTON W. HELMER</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Director</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Hamilton W. Helmer</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ ERNEST J. MONIZ</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Director</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Ernest J. Moniz</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ MARK S. THOMPSON</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Director</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Mark S. Thompson</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/ CARL W. VOGT</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Director</font></p>
  </td>
 </tr>
 <tr>
  <td width="48%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Carl W. Vogt</font></p>
  </td>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="48%" valign="top" style="padding:0in 0in 0in 0in;width:48.0%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
</table>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3</font></p>

<div style="margin:0in 0in .0001pt;text-autospace:none;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>

</div>
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<br clear="all" style="page-break-before:always;">


<div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">EXHIBIT
INDEX</font></b></p>

<p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="8%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:8.02%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">EXHIBIT</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="89%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:89.84%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">DESCRIPTION&nbsp;OF&nbsp;EXHIBIT</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="8%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:8.02%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="89%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:89.84%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="8%" valign="top" style="padding:0in 0in 0in 0in;width:8.02%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.1</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0in 0in 0in 0in;width:89.84%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Restated Articles of
  Organization of the Registrant, as amended by: (a)&nbsp;Articles of Amendment
  dated March&nbsp;28, 1973; (b)&nbsp;Articles of Amendment dated May&nbsp;17,
  1976; (c)&nbsp;Articles of Amendment dated October&nbsp;29, 1976;
  (d)&nbsp;Articles of Amendment dated November&nbsp;5, 1996 (each of the foregoing
  is filed as Exhibit&nbsp;4.1 to the Registrant&#146;s registration statement on
  Form&nbsp;S-8 filed on May&nbsp;28, 1997 (File No.&nbsp;333-27929) and
  incorporated herein by reference); and (e)&nbsp;Certificate of Designation,
  Preferences and Rights of Preferred Stock dated April&nbsp;16, 2008 (filed as
  Exhibit&nbsp;A to Exhibit&nbsp;4.1 to the Registrant&#146;s filing on
  Form&nbsp;8-A12B filed on April&nbsp;18, 2008 (File No.&nbsp;001-06549) and
  incorporated herein by reference).</font></p>
  </td>
 </tr>
 <tr>
  <td width="8%" valign="top" style="padding:0in 0in 0in 0in;width:8.02%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0in 0in 0in 0in;width:89.84%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="8%" valign="top" style="padding:0in 0in 0in 0in;width:8.02%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.2</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0in 0in 0in 0in;width:89.84%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Amended and Restated
  By-laws of the Registrant (filed as Exhibit&nbsp;3.2 to the Registrant&#146;s
  Quarterly Report on Form&nbsp;10-Q for the quarter ended December&nbsp;31,
  2003 (File No.&nbsp;001-06549) and incorporated herein by reference).</font></p>
  </td>
 </tr>
 <tr>
  <td width="8%" valign="top" style="padding:0in 0in 0in 0in;width:8.02%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0in 0in 0in 0in;width:89.84%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="8%" valign="top" style="padding:0in 0in 0in 0in;width:8.02%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4.3</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0in 0in 0in 0in;width:89.84%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Rights Agreement, dated
  April&nbsp;17, 2008, between the Registrant and American Stock
  Transfer&nbsp;&amp; Trust Company (filed as Exhibit&nbsp;4.1 to the Company&#146;s
  filing on Form&nbsp;8-A12B filed on April&nbsp;18, 2008 (File
  No.&nbsp;001-06549) and incorporated herein by reference).</font></p>
  </td>
 </tr>
 <tr>
  <td width="8%" valign="top" style="padding:0in 0in 0in 0in;width:8.02%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0in 0in 0in 0in;width:89.84%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="8%" valign="top" style="padding:0in 0in 0in 0in;width:8.02%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5.1</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0in 0in 0in 0in;width:89.84%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Legal Opinion of Wilmer
  Cutler Pickering Hale and Dorr LLP.</font></p>
  </td>
 </tr>
 <tr>
  <td width="8%" valign="top" style="padding:0in 0in 0in 0in;width:8.02%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0in 0in 0in 0in;width:89.84%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="8%" valign="top" style="padding:0in 0in 0in 0in;width:8.02%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.1</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0in 0in 0in 0in;width:89.84%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent of Wilmer
  Cutler Pickering Hale and Dorr LLP (included in its legal opinion filed as
  Exhibit&nbsp;5.1 to this registration statement).</font></p>
  </td>
 </tr>
 <tr>
  <td width="8%" valign="top" style="padding:0in 0in 0in 0in;width:8.02%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0in 0in 0in 0in;width:89.84%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="8%" valign="top" style="padding:0in 0in 0in 0in;width:8.02%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.2</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0in 0in 0in 0in;width:89.84%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent of
  Caturano&nbsp;and Company, P.C., Independent Registered Public Accounting
  Firm.</font></p>
  </td>
 </tr>
 <tr>
  <td width="8%" valign="top" style="padding:0in 0in 0in 0in;width:8.02%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0in 0in 0in 0in;width:89.84%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="8%" valign="top" style="padding:0in 0in 0in 0in;width:8.02%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">24.1</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0in 0in 0in 0in;width:89.84%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Power of Attorney
  (included on the signature page&nbsp;of this registration statement).</font></p>
  </td>
 </tr>
 <tr>
  <td width="8%" valign="top" style="padding:0in 0in 0in 0in;width:8.02%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0in 0in 0in 0in;width:89.84%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="8%" valign="top" style="padding:0in 0in 0in 0in;width:8.02%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">99.1</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="89%" valign="top" style="padding:0in 0in 0in 0in;width:89.84%;">
  <p style="margin:0in 0in .0001pt;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">American Science and
  Engineering,&nbsp;Inc. 2005 Equity and Incentive Plan.</font></p>
  </td>
 </tr>
</table>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;text-autospace:none;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4</font></p>

<div style="margin:0in 0in .0001pt;text-autospace:none;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>

</div>
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{"company-data": {"conformed-name": "AMERICAN SCIENCE & ENGINEERING INC", "cik": "0000005768", "assigned-sic": "3844", "irs-number": "042240991", "state-of-incorporation": "MA", "fiscal-year-end": "0331"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-162291", "film-number": "091101332"}, "business-address": {"street1": "C/O AS&E", "street2": "829 MIDDLESEX TURNPIKE", "city": "BILLERICA", "state": "MA", "zip": "01821", "phone": "9782628700"}, "mail-address": {"street1": "C/O AS&E", "street2": "829 MIDDLESEX TURNPIKE", "city": "BILLERICA", "state": "MA", "zip": "01821"}}
As filed
with the Securities and Exchange Commission on October 2, 2009.
Registration
No. 333-
UNITED
STATES
SECURITIES AND EXCHANGE COMMISSION
Washington,
D.C. 20549
FORM S-8
REGISTRATION STATEMENT
UNDER
THE
SECURITIES ACT OF 1933
AMERICAN
SCIENCE AND ENGINEERING, INC.
(Exact name of
registrant as specified in its charter)
Massachusetts
04-2240991
(State or other
  jurisdiction of
incorporation or organization)
(I.R.S. Employer
Identification No.)
829
  Middlesex Turnpike
Billerica, Massachusetts
01821
(Address of
  principal executive offices)
(Zip Code)
AMERICAN
SCIENCE AND ENGINEERING, INC.
2005
EQUITY AND INCENTIVE PLAN
(Full title of the
plan)
Patricia
A. Gray, Senior Vice President and General Counsel
American
Science and Engineering, Inc.
829
Middlesex Turnpike
Billerica,
MA 01821
(978)
262-8700
(Name, address and
telephone number, including area code, of agent for service)
Indicate by check mark
whether the registrant is a large accelerated filer, an accelerated filer, a
non-accelerated filer, or a smaller reporting company. See definitions of
"large accelerated filer," "accelerated filer," and "smaller reporting company"
in Rule 12b-2 of the Exchange Act. (Check one):
Large
  accelerated filer
o
Accelerated
  filer
x
Non-accelerated
  filer
o
Smaller
  reporting company
o
(Do not check if
  a smaller reporting company)
CALCULATION
OF REGISTRATION FEE
Title of Each Class of
Securities to be
Registered
Amount to
be
Registered (1)
Proposed
Maximum
Offering Price
Per Share (3)
Proposed
Maximum
Aggregate
Offering Price (3)
Amount of
Registration
Fee
Common
  Stock, $.66 2/3 par value per share, including the associated Series A
  Preferred Stock purchase rights
250,000 shares
(2)
$
67.95
$
16,987,500
$
947.90
(1) Pursuant to Rule 416(a) under
the Securities Act of 1933, as amended (the "Securities Act"), this
registration statement shall be deemed to cover such additional number of
shares of American Science and Engineering, Inc. common stock as may be
offered or issued to prevent dilution resulting from stock splits, stock
dividends, or similar transactions.
(2) Consists of
shares issuable pursuant to the American Science and Engineering, Inc.
2005 Equity and Incentive Plan.
(3) Pursuant to Rules 457(c) and
457(h)(1) under the Securities Act, the proposed maximum offering price
per share and the maximum aggregate offering price for the shares have been
calculated solely for the purpose of computing the registration fee on the
basis of the average of the high and low prices of American Science and
Engineering, Inc. common stock as reported on the Nasdaq Global Market on September 30,
2009, which were $69.00 and $66.89, respectively.
STATEMENT
OF INCORPORATION BY REFERENCE
Except as
otherwise set forth below, this registration statement incorporates by
reference the contents of the registration statement on Form S-8, File No. 333-129851
filed with the Securities and Exchange Commission (the "Commission") by
American Science and Engineering, Inc. (the "Registrant") on November 21,
2005, relating to Registrant's 2005 Equity and Incentive Plan (the "2005 Plan")
and the registration statement on Form S-8, File No. 333-155215 filed
with the Commission by Registrant on November 7, 2008, relating to the
2005 Plan.
PART II
INFORMATION
REQUIRED IN THE REGISTRATION STATEMENT
Item 3.  Incorporation of
Documents by Reference.
Registrant is subject to the informational and reporting requirements
of Sections 13(a), 14, and 15(d) of the Securities Exchange Act of 1934, as
amended (the "Exchange Act"), and in accordance therewith files reports, proxy
statements and other information with the Commission.   The following documents, which are on file
with the Commission, are incorporated in this registration statement by reference
(excluding any portions of such documents that have been "furnished" but not
"filed" for purposes of the Exchange Act):
(a)           Registrant's latest annual report
filed pursuant to Section 13(a) or 15(d) of the Exchange Act or
the latest prospectus filed pursuant to Rule 424(b) under the
Securities Act that contains audited financial statements for Registrant's
latest fiscal year for which such statements have been filed.
(b)           All other reports filed pursuant to Section 13(a) or
15(d) of the Exchange Act since the end of the fiscal year covered by the
document referred to in (a) above.
(c)           The description of the securities
contained in Registrant's registration statements on Form 8-A filed under
the Exchange Act, including any amendment or report filed for the purpose of
updating such description.
All documents subsequently filed by Registrant pursuant to Sections
13(a), 13(c), 14 and 15(d) of the Exchange Act, prior to the filing of a
post-effective amendment which indicates that all securities offered hereby
have been sold or which deregisters all securities then remaining unsold, shall
be deemed to be incorporated by reference in this registration statement and to
be part hereof from the date of the filing of such documents.  Any statement contained in a document
incorporated or deemed to be incorporated by reference herein shall be deemed
to be modified or superseded for the purposes of this registration statement to
the extent that a statement contained herein or in any other subsequently filed
document which also is or is deemed to be incorporated by reference herein
modifies or supersedes such statement. 
Any statement so modified or superseded shall not be deemed, except as
so modified or superseded, to constitute a part of this registration statement.
Item
5.  Interests of Named Experts and Counsel.
Wilmer Cutler Pickering
Hale and Dorr LLP has opined as to the legality of the securities being offered
by this registration statement.
Item
8.  Exhibits.
The Exhibit Index immediately following the signature page is
incorporated herein by reference.
2
SIGNATURES
AND POWERS OF ATTORNEY
Pursuant to the
requirements of the Securities Act of 1933, the Registrant certifies that it
has reasonable grounds to believe that it meets all of the requirements for
filing on Form S-8 and has duly caused this registration statement to be
signed on its behalf by the undersigned, thereunto duly authorized, in the Town
of Billerica, Commonwealth of Massachusetts, on October 2, 2009.
AMERICAN SCIENCE AND
  ENGINEERING, INC.
By:
/s/ ANTHONY R. FABIANO
Name:
Anthony R. Fabiano
Title:
President and Chief
  Executive Officer
POWER
OF ATTORNEY AND SIGNATURES
Further, we, the
undersigned officers and directors of the Registrant hereby severally
constitute and appoint Kenneth J. Galaznik and Patricia A. Gray, and each of
them singly, our true and lawful attorneys with full power to them, and each of
them singly, to sign for us and in our names in the capacities as indicated,
the registration statement on Form S-8 filed herewith and any and all
amendments or supplements to such registration statement, and generally to do
all such things in connection therewith in our name and on our behalf in our
capacities as indicated to enable the Registrant to comply with the provisions
of the Securities Act of 1933, as amended, and all requirements of the
Securities and Exchange Commission, hereby ratifying and confirming our
signatures as they may be signed by our said attorneys, or any of them, to said
registration statement and any and all amendments thereto.
Pursuant to the
requirements of the Securities Act of 1933, this registration statement has
been signed by the following persons in the capacities indicated on October 2,
2009.
/s/ ANTHONY R. FABIANO
Director and President
  and Chief Executive Officer
Anthony R. Fabiano
(Principal Executive
  Officer)
/s/ KENNETH J.GALAZNIK
Chief Financial Officer
  and Treasurer
Kenneth J. Galaznik
(Principal Financial
  Officer)
/s/ DENIS R. BROWN
Chairman of the Board,
  Director
Denis R. Brown
/s/ JOHN A. GORDON
Director
John A. Gordon
/s/ HAMILTON W. HELMER
Director
Hamilton W. Helmer
/s/ ERNEST J. MONIZ
Director
Ernest J. Moniz
/s/ MARK S. THOMPSON
Director
Mark S. Thompson
/s/ CARL W. VOGT
Director
Carl W. Vogt
3
EXHIBIT
INDEX
EXHIBIT
DESCRIPTION OF EXHIBIT
4.1
Restated Articles of
  Organization of the Registrant, as amended by: (a) Articles of Amendment
  dated March 28, 1973; (b) Articles of Amendment dated May 17,
  1976; (c) Articles of Amendment dated October 29, 1976;
  (d) Articles of Amendment dated November 5, 1996 (each of the foregoing
  is filed as Exhibit 4.1 to the Registrant's registration statement on
  Form S-8 filed on May 28, 1997 (File No. 333-27929) and
  incorporated herein by reference); and (e) Certificate of Designation,
  Preferences and Rights of Preferred Stock dated April 16, 2008 (filed as
  Exhibit A to Exhibit 4.1 to the Registrant's filing on
  Form 8-A12B filed on April 18, 2008 (File No. 001-06549) and
  incorporated herein by reference).
4.2
Amended and Restated
  By-laws of the Registrant (filed as Exhibit 3.2 to the Registrant's
  Quarterly Report on Form 10-Q for the quarter ended December 31,
  2003 (File No. 001-06549) and incorporated herein by reference).
4.3
Rights Agreement, dated
  April 17, 2008, between the Registrant and American Stock
  Transfer & Trust Company (filed as Exhibit 4.1 to the Company's
  filing on Form 8-A12B filed on April 18, 2008 (File
  No. 001-06549) and incorporated herein by reference).
5.1
Legal Opinion of Wilmer
  Cutler Pickering Hale and Dorr LLP.
23.1
Consent of Wilmer
  Cutler Pickering Hale and Dorr LLP (included in its legal opinion filed as
  Exhibit 5.1 to this registration statement).
23.2
Consent of
  Caturano and Company, P.C., Independent Registered Public Accounting
  Firm.
24.1
Power of Attorney
  (included on the signature page of this registration statement).
99.1
American Science and
  Engineering, Inc. 2005 Equity and Incentive Plan.
4