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<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>UNITED STATES </B></P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION </B></P>

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

<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></B></P>

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<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>FORM 8-K</B></P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B></B></P>

<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B></B></P>

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<P STYLE="font: 18pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B></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: center"><B>CURRENT REPORT </B></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Securities Exchange Act of 1934 </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Date of Report (Date of earliest event
reported): June 15, 2012</B></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"><B></B></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(Exact name of Registrant as Specified
in its Charter)</B></P>

<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></B></P>

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

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

<TABLE ALIGN="CENTER" CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%">
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    <TD STYLE="vertical-align: top; font-weight: bold; text-align: center; width: 30%">Delaware</TD>
    <TD STYLE="vertical-align: bottom; width: 5%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold; text-align: center; width: 30%">000-52247</TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; width: 5%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold; text-align: center; width: 30%">20-3200738</TD></TR>
<TR>
    <TD STYLE="vertical-align: top">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(State or other jurisdiction&nbsp;of</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>incorporation or organization)</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P></TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold; text-align: center">(Commission File Number)</TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>(I.R.S. Employer</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Identification No.)</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P></TD></TR>
<TR>
    <TD COLSPAN="3" STYLE="text-align: center; vertical-align: top">&nbsp;<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0"><B>96 Windsor Street</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0"><B>West Springfield, Massachusetts</B></P>

</TD>
    <TD STYLE="text-align: center; vertical-align: top"><B>&nbsp;</B></TD>
    <TD STYLE="text-align: center; vertical-align: bottom"><B>&nbsp;01089</B></TD></TR>
<TR>
    <TD COLSPAN="3" STYLE="text-align: center; vertical-align: top"><B>&nbsp;(Address of Principal Executive Offices)</B></TD>
    <TD STYLE="text-align: center; vertical-align: top"><B>&nbsp;</B></TD>
    <TD STYLE="text-align: center; vertical-align: top"><B>&nbsp;&#9; (Zip Code)</B></TD></TR>
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<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>&nbsp;(413) 858-2500</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Registrant&rsquo;s telephone number,
including area code</B></P>

<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></B></P>

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

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

<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></B></P>

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

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<TR STYLE="vertical-align: top">
    <TD STYLE="width: 4%; font-family: Wingdings">&uml;</TD>
    <TD>Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)</TD></TR>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<TR STYLE="vertical-align: top">
    <TD STYLE="width: 4%; font-family: Wingdings">&uml;</TD>
    <TD>Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 4%; font-family: Wingdings">&uml;</TD>
    <TD>Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2-(b))</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

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<TR STYLE="vertical-align: top">
    <TD STYLE="width: 4%; font-family: Wingdings">&uml;</TD>
    <TD>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>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify"><B>Item&nbsp;8.01. Other Events.</B></P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">On August 22, 2012,
Cyalume Technologies Holdings, Inc. (the &ldquo;Company&rdquo;) obtained a copy of a complaint filed in the United States District
Court for the District of Delaware. The complaint was filed by Antonio Colon, an employee of the Company&rsquo;s wholly-owned subsidiary,
Cyalume Technologies, Inc. (&ldquo;CT&rdquo;). The complaint was filed against the Company, CT, and CT&rsquo;s wholly-owned subsidiary,
Cyalume Realty, Inc. (&ldquo;CRI&rdquo;). The complaint alleges, among other things, that CT has constructively terminated Mr.
Colon&rsquo;s employment and that the Company and CT have breached certain provisions of the Stock Purchase Agreement, dated as
of December 22, 2011 (the &ldquo;Purchase Agreement&rdquo;), among CT, the Company, Combat Training Solutions, Inc., and Mr. Colon.
Mr. Colon seeks, among other things, payment of the full potential earn-out amount of $5,750,000 which he alleges is payable under
the Purchase Agreement, payment of salary, wages, bonuses and benefits pursuant to Mr. Colon&rsquo;s employment agreement with
CT, and attorneys&rsquo; fees and costs. The complaint seeks similar relief to the demand for arbitration previously filed by Mr.
Colon, as announced by the Company in its 8-K filed on June 20, 2012.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 37.4pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 37.4pt">The Company considers
the allegations by Mr. Colon to be without merit and intends to fully defend itself on these matters.</P>

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

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<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; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 37.4pt">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
thereunder duly authorized.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 37.4pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 252.45pt"></P>

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<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2" STYLE="padding-top: 9pt; padding-right: 0; padding-left: 0">CYALUME TECHNOLOGIES HOLDINGS, INC.</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 50%">&nbsp;</TD>
    <TD STYLE="width: 5%; padding-top: 9pt; padding-right: 0; padding-left: 0">&nbsp;</TD>
    <TD STYLE="width: 45%; padding-top: 9pt; padding-right: 0; padding-left: 0">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding-top: 9pt; padding-right: 0; padding-left: 0">By </TD>
    <TD STYLE="padding-top: 9pt; padding-right: 0; padding-left: 0; text-decoration: underline">/s/ Michael Bielonko</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">Name:</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; text-decoration: underline">Michael Bielonko</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="padding-right: 0; padding-left: 0">Title:</TD>
    <TD STYLE="padding-right: 0; padding-left: 0; text-decoration: underline">Chief Financial Officer</TD></TR>
</TABLE>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 252.45pt"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 252.45pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 252.45pt"></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Date: August 27, 2012</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">&nbsp;</P>



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{"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": "121057499"}, "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): June 15, 2012
CYALUME TECHNOLOGIES HOLDINGS, INC.
(Exact name of Registrant as Specified
in its Charter)
Delaware
000-52247
20-3200738
(State or other jurisdiction of
incorporation or organization)
(Commission File Number)
(I.R.S. Employer
Identification No.)
96 Windsor Street
West Springfield, Massachusetts
01089
(Address of Principal Executive Offices)
(Zip Code)
(413) 858-2500
Registrant's telephone number,
including area code
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 8.01. Other Events.
On August 22, 2012,
Cyalume Technologies Holdings, Inc. (the "Company") obtained a copy of a complaint filed in the United States District
Court for the District of Delaware. The complaint was filed by Antonio Colon, an employee of the Company's wholly-owned subsidiary,
Cyalume Technologies, Inc. ("CT"). The complaint was filed against the Company, CT, and CT's wholly-owned subsidiary,
Cyalume Realty, Inc. ("CRI"). The complaint alleges, among other things, that CT has constructively terminated Mr.
Colon's employment and that the Company and CT have breached certain provisions of the Stock Purchase Agreement, dated as
of December 22, 2011 (the "Purchase Agreement"), among CT, the Company, Combat Training Solutions, Inc., and Mr. Colon.
Mr. Colon seeks, among other things, payment of the full potential earn-out amount of $5,750,000 which he alleges is payable under
the Purchase Agreement, payment of salary, wages, bonuses and benefits pursuant to Mr. Colon's employment agreement with
CT, and attorneys' fees and costs. The complaint seeks similar relief to the demand for arbitration previously filed by Mr.
Colon, as announced by the Company in its 8-K filed on June 20, 2012.
The Company considers
the allegations by Mr. Colon to be without merit and intends to fully defend itself on these matters.
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
thereunder duly authorized.
CYALUME TECHNOLOGIES HOLDINGS, INC.
By
/s/ Michael Bielonko
Name:
Michael Bielonko
Title:
Chief Financial Officer
Date: August 27, 2012