<SUBMISSION>
<ACCESSION-NUMBER>0001144204-12-018299
<TYPE>NT 10-K
<PUBLIC-DOCUMENT-COUNT>1
<PERIOD>20111231
<FILING-DATE>20120330
<DATE-OF-FILING-DATE-CHANGE>20120330
<EFFECTIVENESS-DATE>20120330
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>ATS CORP
<CIK>0001325460
<ASSIGNED-SIC>8742
<IRS-NUMBER>113747950
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>NT 10-K
<ACT>34
<FILE-NUMBER>001-34595
<FILM-NUMBER>12726142
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>7925 JONES BRANCH DRIVE
<CITY>MCLEAN
<STATE>VA
<ZIP>22102
<PHONE>571-766-2400
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>7925 JONES BRANCH DRIVE
<CITY>MCLEAN
<STATE>VA
<ZIP>22102
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>Federal Services Acquisition CORP
<DATE-CHANGED>20050429
</FORMER-COMPANY>
</FILER>
<DOCUMENT>
<TYPE>NT 10-K
<SEQUENCE>1
<FILENAME>v307781_nt10k.htm
<DESCRIPTION>FORM NT 10-K
<TEXT>
<HTML>
<HEAD>
     <TITLE></TITLE>
</HEAD>
<BODY STYLE="font: 10pt Times New Roman, Times, Serif">

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

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

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR>
    <TD STYLE="width: 25%; vertical-align: top; padding: 2pt">&nbsp;</TD>
    <TD STYLE="width: 50%; vertical-align: top; padding: 2pt; font-weight: bold; text-align: center">UNITED STATES</TD>
    <TD STYLE="width: 25%; vertical-align: bottom; padding: 2pt; text-align: center">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; padding: 2pt; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding: 2pt; font-weight: bold; text-align: center">SECURITIES AND EXCHANGE COMMISSION</TD>
    <TD STYLE="vertical-align: bottom; padding: 2pt">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; padding: 2pt; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding: 2pt; font-weight: bold; text-align: center">&nbsp;Washington, D.C. 20549</TD>
    <TD STYLE="vertical-align: bottom; padding: 2pt">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; padding: 2pt; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding: 2pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 2pt">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; padding: 2pt; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding: 2pt; font-weight: bold; text-align: center">FORM 12b-25&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 2pt">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding: 2pt; font-weight: bold">&nbsp;</TD>
    <TD STYLE="padding: 2pt">&nbsp;</TD>
    <TD STYLE="padding: 2pt; text-align: center; border-top: Black 1pt solid; border-right: Black 1pt solid; border-left: Black 1pt solid">SEC FILE NUMBER</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; padding: 2pt; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding: 2pt; font-weight: bold; text-align: center">&nbsp;NOTIFICATION OF LATE FILING</TD>
    <TD STYLE="vertical-align: bottom; padding: 2pt; text-align: center; border-bottom: Black 1pt solid; border-left: Black 1pt solid; border-right: Black 1pt solid">001-34595</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; padding: 2pt; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding: 2pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 2pt; text-align: center; border-right: Black 1pt solid; border-left: Black 1pt solid">CUSIP NUMBER</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; padding: 2pt; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; padding: 2pt; font-weight: bold; text-align: center">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; padding: 2pt; text-align: center; border-bottom: Black 1pt solid; border-left: Black 1pt solid; border-right: Black 1pt solid">&nbsp;00211E104</TD></TR>
</TABLE>


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

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 20%; padding: 0; text-align: justify; font-style: italic; text-indent: 0">(Check One)</TD>
    <TD STYLE="width: 16%; padding: 0; text-align: justify; font-family: Wingdings; text-indent: 0"><FONT STYLE="font-family: Wingdings 2">
&#83;</FONT><FONT STYLE="font-family: Times New Roman, Times, Serif"> Form 10-K</FONT></TD>
    <TD STYLE="width: 16%; padding: 0; text-align: justify; text-indent: 0"> <FONT STYLE="font-family: Wingdings 2">&#163;</FONT>
    Form 20-F</TD>
    <TD STYLE="width: 16%; padding: 0; text-align: justify; text-indent: 0"> <FONT STYLE="font-family: Wingdings 2">&#163;</FONT>
    Form 11-K</TD>
    <TD STYLE="width: 16%; padding: 0; text-align: justify; text-indent: 0"> <FONT STYLE="font-family: Wingdings 2">&#163;</FONT>
    Form 10-Q</TD>
    <TD STYLE="width: 16%; padding: 0; text-align: justify; text-indent: 0"> <FONT STYLE="font-family: Wingdings 2">&#163;</FONT>
    Form N-SAR</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 40.5pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 40.5pt">For the Period Ended:<U>
December 31, 2011&#9;</U></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 40.5pt"><FONT STYLE="font-family: Wingdings 2">&#163;</FONT> Transition
Report on Form 10-K</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 40.5pt"><FONT STYLE="font-family: Wingdings 2">&#163;</FONT> Transition
Report on Form 20-F</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 40.5pt"><FONT STYLE="font-family: Wingdings 2">&#163;</FONT> Transition
Report on Form 11-K</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 40.5pt"><FONT STYLE="font-family: Wingdings 2">&#163;</FONT> Transition
Report on Form 10-Q</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 40.5pt"><FONT STYLE="font-family: Wingdings 2">&#163;</FONT> Transition
Report on Form N-SAR</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 40.5pt">For the Transition
Period Ended: <U>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&#9;</U></P>



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

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

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

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

<TABLE BORDER="0" CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 100%">
        <P STYLE="font-size: 10pt; text-align: center; margin: 0pt 0"><I>Read Instructions (on back page) Before Preparing Form. Please
        Print or Type.</I></P>
        <P STYLE="text-align: center; margin: 0pt 0; font: 10pt Times New Roman, Times, Serif"><B>Nothing in this form shall be construed
        to imply that the Commission has verified any information contained herein.</B></P></TD></TR>
</TABLE>
<P STYLE="margin: 0pt 0; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

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

<TABLE BORDER="0" CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 100%">If the notification relates to a portion of the filing checked above, identify the Item(s) to which the notification relates:</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-weight: bold">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-weight: bold; padding-bottom: 2.5pt; border-bottom: Black 1pt solid">&nbsp;</TD></TR>
</TABLE>

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

<TABLE BORDER="0" CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top">
    <TD STYLE="font-weight: bold; width: 100%">PART I &#151; REGISTRANT INFORMATION</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-weight: bold">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">ATS Corporation</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>Full Name of Registrant</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">Not Applicable</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>Former Name if Applicable</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">7925 Jones Branch Drive</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>Address of Principal Executive Office <I>(Street and Number)</I></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">McLean, Virginia 22102</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>City, State and Zip Code</TD></TR>
</TABLE>
<P STYLE="margin: 0pt 0; font: 10pt Times New Roman, Times, Serif">&nbsp;</P>

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

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; text-indent: -10pt; margin: 0pt 0 0pt 10pt"><B>PART II &#151; RULES 12b-25(b)
AND (c)</B></P>

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

<P STYLE="margin: 0pt 0; font: 10pt Times New Roman, Times, Serif">If the subject report could not be filed without unreasonable
effort or expense and the registrant seeks relief pursuant to Rule&nbsp;12b-25(b), the following should be completed. (Check box
if appropriate)</P>

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

<TABLE BORDER="0" CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 4%">&nbsp;</TD>
    <TD STYLE="width: 4%">&nbsp;(a)</TD>
    <TD STYLE="width: 92%">The reason described in reasonable detail in Part&nbsp;III of this form could not be eliminated without unreasonable effort or expense;</TD></TR>
<TR>
    <TD STYLE="font-family: Wingdings; text-align: center"><FONT STYLE="font-family: Wingdings 2">&#83;</FONT></TD>
    <TD STYLE="vertical-align: top">&nbsp;(b)</TD>
    <TD STYLE="vertical-align: top">The subject annual report, semi-annual report, transition report on Form&nbsp;10-K,
    Form&nbsp;20-F, 11-K, or Form&nbsp;N-SAR , or portion thereof, will be filed on or before the fifteenth
    calendar day following the prescribed due date; or the subject quarterly report or transition report on Form&nbsp;10-Q, or
    portion thereof will be filed on or before the fifth calendar day following the prescribed due date; and</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;(c)</TD>
    <TD>The accountant&#146;s statement or other exhibit required by Rule&nbsp;12b-25(c) has been attached if applicable.</TD></TR>
</TABLE>
<P STYLE="margin: 0pt 0; font: 10pt Times New Roman, Times, Serif">&nbsp;&nbsp;</P>

<P STYLE="font: bold 10pt Times New Roman, Times, Serif; text-indent: -10pt; margin: 0pt 0 0pt 10pt"><B>PART III &#151; NARRATIVE</B></P>

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

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">State below in reasonable detail the reasons
why Forms 10-K, 20-F, 11-K, 10-Q, N-SAR, or the transition report or portion thereof, could not be filed within the prescribed
time period.</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 February 21, 2012, ATS Corporation,
a Delaware corporation (the &ldquo;Company&rdquo;) entered into an Agreement and Plan of Merger (the &ldquo;Merger Agreement&rdquo;)
among the Company, Salient Federal Solutions, Inc. (&ldquo;Parent&rdquo;) and Atlas Merger Subsidiary (&ldquo;Merger Sub&rdquo;),
pursuant to which Merger Sub commenced a cash tender offer (the &ldquo;Offer&rdquo;) to purchase <FONT STYLE="color: black">&nbsp;all
of the issued and outstanding shares of common stock of the Company at a purchase price of $3.20 per share, net to the seller in
cash, without interest thereon and less any required withholding taxes. The Offer was scheduled to expire at 11:59 pm New York
City time on March 26, 2012 and has been extended to expire at 11:59 pm New York City time on March 29, 2012. Because the efforts
of the Company&rsquo;s management have been focused on the Offer, the Merger Agreement and the transactions contemplated thereby,
the Company is unable to file the Annual Report on Form 10-K for the fiscal year ended December 31, 2011 within the prescribed
period of time.</FONT></P>



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

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

<P STYLE="margin: 0pt 0; font: 10pt Times New Roman, Times, Serif"></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: 10pt Times New Roman, Times, Serif"><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%; font: 10pt Times New Roman, Times, Serif"><TR><TD STYLE="text-align: center; width: 100%">&nbsp;</TD></TR></TABLE></DIV>
    <!-- Field: /Page -->
<P STYLE="margin: 0pt 0; font: 10pt Times New Roman, Times, Serif">&nbsp;&nbsp;</P>

<P STYLE="margin: 0pt 0; font: 10pt Times New Roman, Times, Serif"><B>PART IV &#151; OTHER INFORMATION</B></P>

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

<TABLE BORDER="0" CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top">
    <TD>(1)</TD>
    <TD COLSPAN="5">Name and telephone number of person to contact in regard to this notification</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="5">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 63%; border-bottom: windowtext 1pt solid; text-align: center">Pamela A. Little</TD>
    <TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 11%; border-bottom: windowtext 1pt solid; text-align: center">571</TD>
    <TD STYLE="width: 3%">&nbsp;</TD>
    <TD STYLE="width: 17%; border-bottom: windowtext 1pt solid; text-align: center">766-2400</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">(Name)</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">(Area Code)</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="text-align: center">(Telephone Number)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>(2)</TD>
    <TD COLSPAN="5">Have all other periodic reports required under Section 13 or 15(d) of the Securities Exchange Act of 1934 or Section 30 of the Investment Company Act of 1940 during the preceding 12 months or for such shorter period that the registrant was required to file such report(s) been filed ? If answer is no, identify report(s).</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="font-family: Wingdings"><FONT STYLE="font: 10pt Wingdings"><FONT STYLE="font-family: Wingdings 2">&#83;</FONT></FONT>&nbsp;<FONT STYLE="font-family: Times New Roman, Times, Serif">Yes</FONT>&nbsp;&nbsp;&nbsp;&nbsp;<FONT STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings 2">&#163;</FONT></FONT><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;No</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>(3)</TD>
    <TD COLSPAN="5">Is it anticipated that any significant change in results of operations from the corresponding period for the last fiscal year will be reflected by the earnings statements to be included in the subject report or portion thereof?</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD STYLE="font-family: Wingdings"><FONT STYLE="font-family: Wingdings 2">&#83;</FONT><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;Yes</FONT>&nbsp;&nbsp;&nbsp;&nbsp;<FONT STYLE="font-family: Wingdings 2"><FONT STYLE="font-family: Wingdings 2">&#163;</FONT></FONT><FONT STYLE="font-family: Times New Roman, Times, Serif">&nbsp;No</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="5">If so, attach an explanation of the anticipated change, both narratively and quantitatively, and, if appropriate, state the reasons why a reasonable estimate of the results cannot be made.</TD></TR>
</TABLE>
<P STYLE="margin: 0pt 0; font: 10pt Times New Roman, Times, Serif">&nbsp;&nbsp;</P>

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

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Based on the Company&rsquo;s unaudited results as disclosed
in its earnings release dated February 21, 2012 (the &ldquo;Earnings Release&rdquo;), there will be significant changes in the
Company&rsquo;s results of operations for the fiscal year ended December 31, 2011 as compared to the prior year. The Company reported
unaudited revenue of $91.4 million for the fiscal year ended December 31, 2011 in the Earnings Release. Revenue for the year decreased
$25.3 million, or by 21.7% from revenue of $116.7 million for fiscal year 2010. Revenue from Fannie Mae, a government sponsored
enterprise, decreased by $7.7 million to $7.7 million, or by 50%. Revenue from commercial contracts decreased by $2.9 million to
$9.4 million, or 23.6%. Revenue from civilian and defense contracts decreased by $14.6 million to $74.3 million, or 16.5%.</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">Unaudited operating income for 2011 was $7.5 million and unaudited
net income for the year was $4.5 million, or $0.19 per diluted share, per the Earnings Release, compared to operating income of
$10.5 million and net income of $7.1 million, or $0.31 per diluted share in 2010.</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">These decreases are a result of the increasingly difficult federal
budget environment that delayed awards on a number of new contracts the Company is pursuing and postponed development funding or
reduced the initial scope of several sizeable recompetes that the Company won during the year ended December 31, 2011.</P>



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

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

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

<!-- Field: Rule-Page --><DIV ALIGN="LEFT" STYLE="margin-top: 0; margin-bottom: 0"><DIV STYLE="font-size: 1pt; border-top: Black 1pt solid; width: 100%">&nbsp;</DIV></DIV><!-- Field: /Rule-Page -->

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

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

<TABLE BORDER="0" CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; border-collapse: collapse; font: 10pt Times New Roman, Times, Serif">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 25%; text-align: center">&nbsp;</TD>
    <TD STYLE="width: 50%; text-align: center; border-bottom: Black 1pt solid">ATS Corporation</TD>
    <TD STYLE="width: 25%; text-align: center">&nbsp;</TD></TR>
</TABLE>
<P STYLE="text-align: center; margin-top: 0pt; font: 10pt Times New Roman, Times, Serif; margin-bottom: 0pt">(Name of Registrant as Specified in Charter)</P>

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

<P STYLE="margin: 0pt 0; font: 10pt Times New Roman, Times, Serif">has caused this notification to be signed on its behalf by
the undersigned hereunto duly authorized.&nbsp;&nbsp;</P>

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

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

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%; padding: 0; text-align: justify; text-indent: 0">Date</TD>
    <TD STYLE="width: 23%; padding: 0; text-align: center; border-bottom: Black 1pt solid">March 30, 2012</TD>
    <TD STYLE="width: 31%; padding: 0; text-align: justify; text-indent: 0">&nbsp;</TD>
    <TD STYLE="width: 4%; padding: 0; text-align: justify; text-indent: 0">By<U> </U></TD>
    <TD STYLE="width: 37%; padding: 0; text-align: justify; text-indent: 0; border-bottom: Black 1pt solid">/s/ Pamela A. Little</TD></TR>
</TABLE>


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

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

<P STYLE="margin: 0pt 0; font: 10pt Times New Roman, Times, Serif"></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">INSTRUCTIONS: The form may be signed by
an executive officer of the registrant or by any other duly authorized representative. The name and title of the person signing
the form shall be typed or printed beneath the signature. If the statement is signed on behalf of the registrant by an authorized
representative (other than an executive officer), evidence of the representative&rsquo;s authority to sign on behalf of the registrant
shall be filed with the form.</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">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font-family: Times New Roman, Times, Serif">
<TR>
    <TD STYLE="padding: 3pt; text-indent: 0; border-top: Black 1pt solid; border-right: Black 1pt solid; border-left: Black 1pt solid">
        <P STYLE="font: bold 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-transform: uppercase; text-align: center"><FONT STYLE="text-transform: none">ATTENTION</FONT></P></TD></TR>
</TABLE>
<TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font-family: Times New Roman, Times, Serif">
<TR>
    <TD STYLE="padding: 3pt; text-indent: 0; border-bottom: Black 1pt solid; border-left: Black 1pt solid; border-right: Black 1pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Intentional misstatements or omissions
        of fact constitute Federal Criminal Violations (See 18 U.S.C. 1001).</B></P></TD></TR>
</TABLE>
<P STYLE="margin: 0pt 0">&nbsp;</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">&nbsp;</P>

<!-- Field: Page; Sequence: 2; Options: Last -->
    <DIV STYLE="margin-top: 12pt; margin-bottom: 6pt; border-bottom: Black 1pt solid"><TABLE CELLPADDING="0" CELLSPACING="0" STYLE="width: 100%; font: 10pt Times New Roman, Times, Serif"><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: justify"></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">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 27.35pt; text-align: justify; text-indent: -27.35pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 27.35pt; text-align: justify; text-indent: -27.35pt">&nbsp;</P>



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

</BODY>
</HTML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
