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

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

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></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">&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">FORM 8-K</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 14, 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: 0pt 0; text-align: center">Cyalume Technologies Holdings, Inc.</P>

<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: 0pt 0; 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: 0pt 0; text-align: center; text-indent: 0.5in">(State or other jurisdiction</P></TD>
    <TD COLSPAN="3">
        <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: 0pt 0; 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: 0pt 0; 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: 0pt 0; 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: 0pt 0; 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: 0pt 0; text-align: center">Not Applicable</P>

<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: 0pt 0; 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>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in; text-align: left"><FONT STYLE="font-family: Wingdings">&#168;</FONT></TD><TD STYLE="text-align: justify">Written communications pursuant to Rule
425 under the Securities Act (17 CFR 230.425)</TD>
</TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in; text-align: left"><FONT STYLE="font-family: Wingdings">&#168;</FONT></TD><TD STYLE="text-align: justify">Soliciting material pursuant to Rule 14a-12
under the Exchange Act (17 CFR 240.14a-12)</TD>
</TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in; text-align: left"><FONT STYLE="font-family: Wingdings">&#168;</FONT></TD><TD STYLE="text-align: justify">Pre-commencement communications pursuant
to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))</TD>
</TR></TABLE>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0; margin-bottom: 6pt"><TR STYLE="vertical-align: top; text-align: justify">
<TD STYLE="width: 0.5in"></TD><TD STYLE="width: 0.25in; text-align: left"><FONT STYLE="font-family: Wingdings">&#168;</FONT></TD><TD STYLE="text-align: justify">Pre-commencement communications pursuant
to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))</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>

<!-- 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"><B>&nbsp;</B></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: left; width: 50%">&nbsp;</TD><TD STYLE="text-align: right; width: 50%"></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"></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 14, 2012, the Audit Committee of
Cyalume Technologies Holdings, Inc. (&lsquo;the Company&rdquo;) appointed BDO USA, LLP as the independent registered public accounting
firm for the Company for the fiscal year ending December&nbsp;31, 2012.&nbsp; During the last two fiscal years and through May
14, 2012, the Company has not consulted with BDO USA, LLP regarding (i)&nbsp;the application of accounting principles to a specified
transaction or transactions, either completed or proposed, or the type of audit opinion BDO USA, LLP might render on the Company&rsquo;s
financial statements or (ii)&nbsp;any matter that was either the subject of a disagreement, as that term is defined in Item 304(a)(1)(iv)&nbsp;of
Regulation S-K and the related instructions to that Item, or a &ldquo;reportable event&rdquo; as that term is 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>

<!-- 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: left; width: 50%">&nbsp;</TD><TD STYLE="text-align: right; width: 50%"></TD></TR></TABLE></DIV>
    <!-- Field: /Page -->
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></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: 15%; text-autospace: none">&nbsp;</TD>
    <TD STYLE="width: 35%; text-autospace: none">&nbsp;</TD>
    <TD STYLE="width: 2%; text-autospace: none">&nbsp;</TD>
    <TD STYLE="width: 1%; text-autospace: none">&nbsp;</TD>
    <TD STYLE="width: 35%; text-autospace: none">&nbsp;</TD>
    <TD STYLE="width: 12%">&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>
    <TD>&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 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>&nbsp;</TD></TR>
<TR STYLE="vertical-align: bottom">
    <TD STYLE="text-autospace: none">May 15, 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</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P></TD>
    <TD>&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 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>
    <TD>&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 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>
    <TD>&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>



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

<!-- Field: Page; Sequence: 3; Options: Last -->
    <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>
    <!-- Field: /Page -->
<P STYLE="margin: 0"></P>

</BODY>
</HTML>
[{"type": "8-K", "sequence": "1", "filename": "v313386_8k.htm", "description": "FORM 8-K", "secsgml_size_bytes": 16429}]
{"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": "12841596"}, "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 14, 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 14, 2012, the Audit Committee of
Cyalume Technologies Holdings, Inc. ('the Company") appointed BDO USA, LLP as the independent registered public accounting
firm for the Company for the fiscal year ending December 31, 2012.  During the last two fiscal years and through May
14, 2012, the Company has not consulted with BDO USA, LLP regarding (i) the application of accounting principles to a specified
transaction or transactions, either completed or proposed, or the type of audit opinion BDO USA, LLP might render on the Company's
financial statements or (ii) any matter that was either the subject of a disagreement, as that term is defined in Item 304(a)(1)(iv) of
Regulation S-K and the related instructions to that Item, or a "reportable event" as that term is defined in Item 304(a)(1)(v) of
Regulation S-K.
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 15, 2012
By:
/s/ Michael Bielonko
Name: Michael Bielonko
Title: Chief Financial Officer