<HTML>
<HEAD>
     <TITLE></TITLE>
</HEAD>
<BODY STYLE="font: 10pt Times New Roman, Times, Serif">

<P STYLE="margin: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<!-- Field: Rule-Page --><DIV ALIGN="LEFT" STYLE="margin-top: 1pt; margin-bottom: 1pt"><DIV STYLE="font-size: 1pt; border-top: #7F0000 0.75pt solid; width: 100%">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">UNITED STATES</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0.5in">SECURITIES AND EXCHANGE
COMMISSION</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0.5in">WASHINGTON, D.C. 20549</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><FONT STYLE="font-size: 14pt">FORM 8-K</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">CURRENT REPORT</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">Pursuant to Section&nbsp;13 or 15(d) of
the Securities Exchange Act of 1934</P>

<TABLE ALIGN="CENTER" CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 51%; text-autospace: none">&nbsp;</TD>
    <TD STYLE="width: 5%; text-autospace: none">&nbsp;</TD>
    <TD STYLE="width: 44%; text-autospace: none">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; text-autospace: none; text-align: center">Date of Report (Date of Earliest Event Reported):</TD>
    <TD STYLE="vertical-align: bottom; text-autospace: none">&nbsp;</TD>
    <TD STYLE="vertical-align: top; text-autospace: none; text-align: center">May 1, 2012</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><FONT STYLE="font-size: 14pt">Cyalume
Technologies Holdings, Inc.</FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">__________________________________________</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">(Exact name of registrant
as specified in its charter)</P>

<TABLE ALIGN="CENTER" CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="text-autospace: none">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-autospace: none">&nbsp;</TD>
    <TD STYLE="text-autospace: none">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-autospace: none; text-align: center">Delaware</TD>
    <TD COLSPAN="3" STYLE="text-autospace: none; text-align: center">000-52247</TD>
    <TD STYLE="text-autospace: none; text-align: center"><FONT STYLE="background-color: white">20-3200738</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">_____________________</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">(State or other jurisdiction</P></TD>
    <TD COLSPAN="3">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">_____________</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">(Commission</P></TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">______________</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">(I.R.S. Employer</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-autospace: none; text-align: center">of incorporation)</TD>
    <TD COLSPAN="3" STYLE="text-autospace: none; text-align: center">File Number)</TD>
    <TD STYLE="text-autospace: none; text-align: center">Identification No.)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-autospace: none; text-align: center">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="text-autospace: none; text-align: center">&nbsp;</TD>
    <TD STYLE="text-autospace: none; text-align: center">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: center">96 Windsor Street, West Springfield, Massachusetts </TD>
    <TD COLSPAN="3" STYLE="text-autospace: none; text-align: center">&nbsp;</TD>
    <TD STYLE="text-autospace: none; text-align: center">01089</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">_________________________________</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">(Address of principal
        executive offices)</P></TD>
    <TD COLSPAN="3" STYLE="text-autospace: none; text-align: center">&nbsp;</TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">___________</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">(Zip Code)</P></TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD COLSPAN="2" STYLE="text-autospace: none">&nbsp;</TD>
    <TD STYLE="text-autospace: none">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="text-autospace: none">&nbsp;</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="vertical-align: top; text-autospace: none; text-align: right">Registrant&rsquo;s telephone number, including area code:</TD>
    <TD STYLE="vertical-align: bottom; text-autospace: none; text-align: right">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="vertical-align: top; text-autospace: none; text-align: center"><FONT STYLE="background-color: white">(413) 858-2500</FONT></TD></TR>
<TR>
    <TD STYLE="width: 35%">&nbsp;</TD>
    <TD STYLE="width: 18%">&nbsp;</TD>
    <TD STYLE="width: 4%">&nbsp;</TD>
    <TD STYLE="width: 10%">&nbsp;</TD>
    <TD STYLE="width: 33%">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">Not Applicable</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">______________________________________________</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">Former name or former
address, if changed since last report</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Check the appropriate box below if the Form 8-K filing is intended
to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left"><FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings">&#168;</FONT></FONT>&nbsp;&nbsp;Written communications
pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left"><FONT STYLE="font-family: Wingdings">&#168;</FONT>&nbsp;&nbsp;Soliciting material
pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left"><FONT STYLE="font-family: Wingdings">&#168;</FONT>&nbsp;&nbsp;Pre-commencement
communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: left"><FONT STYLE="font-family: Wingdings">&#168;</FONT>&nbsp;&nbsp;Pre-commencement
communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<!-- Field: Page; Sequence: 1 -->
    <DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font-size: 10pt"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>Item 4.01&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Changes in Registrant&rsquo;s Certifying Accountant.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">On May 1, 2012, as directed by its Audit
Committee of the Board of Directors (&ldquo;the Audit Committee&rdquo;), Cyalume Technologies Holdings, Inc. (the &ldquo;Company&rdquo;)
dismissed Grant Thornton LLP as its independent registered public accounting firm.&nbsp; The audit report of Grant Thornton LLP
on the consolidated financial statements of the Company as of and for the years ended December 31, 2011 and 2010 contained no adverse
opinion or disclaimer of opinion and was not qualified or modified as to uncertainty, audit scope or accounting principles. The
consolidated financial statements of the Company as of and for the year ended December 31, 2010 were audited by CCR LLP. Grant
Thornton LLP subsequently succeeded to the practice of such firm.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">During the two most recent fiscal years
ended December 31, 2011 and through the period ended May 1, 2012, there have been no disagreements with Grant Thornton LLP or with
CCR LLP on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure, which
disagreements if not resolved to the satisfaction of Grant Thornton LLP would have caused Grant Thornton LLP to make reference
to the subject matter of such disagreements in their report on the financial statements.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">During the two most recent fiscal years
ended December 31, 2011 and through the period ended May 1, 2012, there have been no &ldquo;reportable events&rdquo; as defined
in Item 304(a)(1)(v)&nbsp;of Regulation S-K.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">On May 1, 2012, the Company notified Grant
Thornton LLP about its decision and requested that Grant Thornton LLP furnish it with a letter addressed to the Securities and
Exchange Commission stating whether or not they agree with the above statements.&nbsp; A copy of such letter, dated May 3, 2012,
is filed as Exhibit&nbsp;16 to this Current Report on Form&nbsp;8-K.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><B>Item 9.01 Financial Statements and Exhibits.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">(d)Exhibits:</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 10%; text-autospace: none">&nbsp;</TD>
    <TD STYLE="width: 1%; text-autospace: none">&nbsp;</TD>
    <TD STYLE="width: 89%; text-autospace: none">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD STYLE="border-bottom: windowtext 1pt solid; text-autospace: none; font-weight: bold">Exhibit No.</TD>
    <TD STYLE="text-autospace: none">&nbsp;</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; text-autospace: none; font-weight: bold">Description</TD></TR>
<TR STYLE="background-color: rgb(204,255,204)">
    <TD STYLE="vertical-align: top; text-autospace: none; text-align: center">16</TD>
    <TD STYLE="vertical-align: bottom; text-autospace: none">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp; Letter from Grant Thornton LLP to the Securities and Exchange Commission dated May 3, 2012 regarding change in certifying accountant.</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<!-- Field: Page; Sequence: 2 -->
    <DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font-size: 10pt"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SIGNATURES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">Pursuant to the requirements of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.</P>

<TABLE ALIGN="CENTER" CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 18%; text-autospace: none">&nbsp;</TD>
    <TD STYLE="width: 33%; text-autospace: none">&nbsp;</TD>
    <TD STYLE="width: 3%; text-autospace: none">&nbsp;</TD>
    <TD STYLE="width: 2%; text-autospace: none">&nbsp;</TD>
    <TD STYLE="width: 44%; text-autospace: none">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; text-autospace: none">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; text-autospace: none">&nbsp;</TD>
    <TD COLSPAN="3" STYLE="vertical-align: bottom; text-autospace: none">Cyalume Technologies Holdings, Inc.</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; text-autospace: none">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; text-autospace: none">&nbsp;</TD>
    <TD STYLE="vertical-align: top; text-autospace: none">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; text-autospace: none">&nbsp;</TD>
    <TD STYLE="vertical-align: top; text-autospace: none">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD STYLE="text-autospace: none">May 4, 2012</TD>
    <TD STYLE="text-autospace: none">&nbsp;</TD>
    <TD STYLE="text-autospace: none">By:</TD>
    <TD STYLE="text-autospace: none">&nbsp;</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">/s/ Michael Bielonko&nbsp;</P></TD></TR>
<TR>
    <TD STYLE="vertical-align: top; text-autospace: none">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; text-autospace: none">&nbsp;</TD>
    <TD STYLE="vertical-align: top; text-autospace: none">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; text-autospace: none">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; text-autospace: none">Name: Michael Bielonko</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; text-autospace: none">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; text-autospace: none">&nbsp;</TD>
    <TD STYLE="vertical-align: top; text-autospace: none">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; text-autospace: none">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; text-autospace: none">Title: Chief Financial Officer</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

<!-- Field: Page; Sequence: 3 -->
    <DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font-size: 10pt"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
    <DIV STYLE="page-break-before: always; margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Exhibit&nbsp;Index</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: bottom">
    <TD STYLE="width: 10%; text-autospace: none">&nbsp;</TD>
    <TD STYLE="width: 1%; text-autospace: none">&nbsp;</TD>
    <TD STYLE="width: 89%; text-autospace: none">&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD STYLE="border-bottom: windowtext 1pt solid; text-autospace: none; font-weight: bold">Exhibit No.</TD>
    <TD STYLE="text-autospace: none">&nbsp;</TD>
    <TD STYLE="border-bottom: windowtext 1pt solid; text-autospace: none; font-weight: bold">Description</TD></TR>
<TR STYLE="background-color: rgb(204,255,204)">
    <TD STYLE="vertical-align: top; text-autospace: none; text-align: center">16</TD>
    <TD STYLE="vertical-align: bottom; text-autospace: none">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom">&nbsp; Letter from Grant Thornton LLP to the Securities and Exchange Commission dated May 3, 2012 regarding change in certifying accountant. </TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

<!-- Field: Page; Sequence: 4 -->
    <DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font-size: 10pt"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
    <DIV STYLE="margin-top: 6pt; margin-bottom: 12pt"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>



<P STYLE="margin: 0"></P>

<P STYLE="margin: 0">&nbsp;</P>

</BODY>
</HTML>
[{"type": "8-K", "sequence": "1", "filename": "v311955_8k.htm", "description": "FORM 8-K", "secsgml_size_bytes": 20634}]
{"company-data": {"conformed-name": "Cyalume Technologies Holdings, Inc.", "cik": "0001335293", "assigned-sic": "3640", "irs-number": "203200738", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-52247", "film-number": "12813215"}, "business-address": {"street1": "96 WINDSOR STREET,", "city": "WEST SPRINGFIELD", "state": "MA", "zip": "01089", "phone": "(413) 858-2500"}, "mail-address": {"street1": "96 WINDSOR STREET,", "city": "WEST SPRINGFIELD", "state": "MA", "zip": "01089"}, "former-company": {"former-conformed-name": "Vector Intersect Security Acquisition Corp.", "date-changed": "20050804"}}
UNITED STATES
SECURITIES AND EXCHANGE
COMMISSION
WASHINGTON, D.C. 20549
FORM 8-K
CURRENT REPORT
Pursuant to Section 13 or 15(d) of
the Securities Exchange Act of 1934
Date of Report (Date of Earliest Event Reported):
May 1, 2012
Cyalume
Technologies Holdings, Inc.
__________________________________________
(Exact name of registrant
as specified in its charter)
Delaware
000-52247
20-3200738
_____________________
(State or other jurisdiction
_____________
(Commission
______________
(I.R.S. Employer
of incorporation)
File Number)
Identification No.)
96 Windsor Street, West Springfield, Massachusetts
01089
_________________________________
(Address of principal
        executive offices)
___________
(Zip Code)
Registrant's telephone number, including area code:
(413) 858-2500
Not Applicable
______________________________________________
Former name or former
address, if changed since last report
Check the appropriate box below if the Form 8-K filing is intended
to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
¨
Written communications
pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
¨
Soliciting material
pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
¨
Pre-commencement
communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
¨
Pre-commencement
communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Item 4.01              
Changes in Registrant's Certifying Accountant.
On May 1, 2012, as directed by its Audit
Committee of the Board of Directors ("the Audit Committee"), Cyalume Technologies Holdings, Inc. (the "Company")
dismissed Grant Thornton LLP as its independent registered public accounting firm.  The audit report of Grant Thornton LLP
on the consolidated financial statements of the Company as of and for the years ended December 31, 2011 and 2010 contained no adverse
opinion or disclaimer of opinion and was not qualified or modified as to uncertainty, audit scope or accounting principles. The
consolidated financial statements of the Company as of and for the year ended December 31, 2010 were audited by CCR LLP. Grant
Thornton LLP subsequently succeeded to the practice of such firm.
During the two most recent fiscal years
ended December 31, 2011 and through the period ended May 1, 2012, there have been no disagreements with Grant Thornton LLP or with
CCR LLP on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure, which
disagreements if not resolved to the satisfaction of Grant Thornton LLP would have caused Grant Thornton LLP to make reference
to the subject matter of such disagreements in their report on the financial statements.
During the two most recent fiscal years
ended December 31, 2011 and through the period ended May 1, 2012, there have been no "reportable events" as defined
in Item 304(a)(1)(v) of Regulation S-K.
On May 1, 2012, the Company notified Grant
Thornton LLP about its decision and requested that Grant Thornton LLP furnish it with a letter addressed to the Securities and
Exchange Commission stating whether or not they agree with the above statements.  A copy of such letter, dated May 3, 2012,
is filed as Exhibit 16 to this Current Report on Form 8-K.
Item 9.01 Financial Statements and Exhibits.
(d)Exhibits:
Exhibit No.
Description
16
Letter from Grant Thornton LLP to the Securities and Exchange Commission dated May 3, 2012 regarding change in certifying accountant.
SIGNATURES
Pursuant to the requirements of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
Cyalume Technologies Holdings, Inc.
May 4, 2012
By:
/s/ Michael Bielonko
Name: Michael Bielonko
Title: Chief Financial Officer
Exhibit Index
Exhibit No.
Description
16
Letter from Grant Thornton LLP to the Securities and Exchange Commission dated May 3, 2012 regarding change in certifying accountant.