<SUBMISSION>
<ACCESSION-NUMBER>0001104659-08-072571
<TYPE>425
<PUBLIC-DOCUMENT-COUNT>1
<FILING-DATE>20081124
<DATE-OF-FILING-DATE-CHANGE>20081124
<SUBJECT-COMPANY>
<COMPANY-DATA>
<CONFORMED-NAME>KRATOS DEFENSE & SECURITY SOLUTIONS, INC.
<CIK>0001069258
<ASSIGNED-SIC>4899
<IRS-NUMBER>133818604
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1228
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>425
<ACT>34
<FILE-NUMBER>000-27231
<FILM-NUMBER>081209168
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>4810 EASTGATE MALL
<STREET2>.
<CITY>SAN DIEGO
<STATE>CA
<ZIP>92121
<PHONE>858-812-7300
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>4810 EASTGATE MALL
<STREET2>.
<CITY>SAN DIEGO
<STATE>CA
<ZIP>92121
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>WIRELESS FACILITIES INC
<DATE-CHANGED>19990817
</FORMER-COMPANY>
</SUBJECT-COMPANY>
<FILED-BY>
<COMPANY-DATA>
<CONFORMED-NAME>KRATOS DEFENSE & SECURITY SOLUTIONS, INC.
<CIK>0001069258
<ASSIGNED-SIC>4899
<IRS-NUMBER>133818604
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1228
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>425
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>4810 EASTGATE MALL
<STREET2>.
<CITY>SAN DIEGO
<STATE>CA
<ZIP>92121
<PHONE>858-812-7300
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>4810 EASTGATE MALL
<STREET2>.
<CITY>SAN DIEGO
<STATE>CA
<ZIP>92121
</MAIL-ADDRESS>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>WIRELESS FACILITIES INC
<DATE-CHANGED>19990817
</FORMER-COMPANY>
</FILED-BY>
<DOCUMENT>
<TYPE>425
<SEQUENCE>1
<FILENAME>a08-29109_3425.htm
<DESCRIPTION>425
<TEXT>

<html>

<head>





</head>

<body lang="EN-US">

<div style="font-family:Times New Roman;">

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

<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Filed by Kratos Defense&nbsp;&amp; Security
Solutions,&nbsp;Inc.</font></p>

<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to Rule&nbsp;425</font></p>

<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">under the Securities Act of 1933 and</font></p>

<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">deemed filed pursuant to Rule&nbsp;14a-6 under</font></p>

<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">the Securities Exchange Act of 1934, as amended</font></p>

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

<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Subject Company: Kratos Defense&nbsp;&amp; Security
Solutions,&nbsp;Inc.</font></p>

<p align="right" style="font-size:10.0pt;margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman"><font style="font-size:10.0pt;">Commission File No: 000-</font>  </font>27231</p>

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

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Sent
to all Madison employees (a subset of Kratos) on Monday morning:</font></b></p>

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

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">24 November&nbsp;2008</font></p>

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

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Last week you heard from our
CEO, Eric DeMarco, and Howard Bates, our KGS president, about the internal
Kratos reorganization and today you heard about the merger of Kratos and
Digital Fusion Incorporated (DFI), a Huntsville based company. I am personally
excited about these two happenings and a little saddened because I will not be
in the middle of making it happen because of my planned retirement at the end
of this year.</font></p>

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

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">A little over two years ago,
Madison Research Corporation signed an agreement with WFI, Wireless facilities
Inc, to be acquired by them. At that time, Eric had revealed to us his plan and
mission to transform WFI a commercial wireless industry services provider into
a leading provider of services to the Federal Government, mainly DOD. MRC was
not the first acquisition by WFI but it was the largest at that time.</font></p>

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

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">From the time we officially
closed that deal in October&nbsp;2006 until now, a lot has happened. We, in
MRD, were busy doing our normal things of developing business and executing the
contracts to the best of our ability plus integrating ourselves into the larger
parent company WFI.</font></p>

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

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Meanwhile, WFI was busy buying and
selling. They bought Haverstick and SYS technologies and sold their Wireless
Engineering and Wireless Deployment businesses along with the name WFI. In the
summer of 2007, a new name, Kratos, was selected for our company. Kratos the
God of defense and security was a fitting name for the emerging organization, a
defense and Security company.</font></p>

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

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Now is the time for Kratos to
transform itself from a collection of small companies into a mid tier company
that can compete with its peers. The weakness of most small companies is that
they have breadth but no depth. The reorganization brings together our like
capabilities to give us that depth. This is a good reason to change. Change is
always inevitable whether we plan it or it just happens. I know there are some trepidations
and angst. Many times we cling to the good things the way they were and look
for the bad things in the change. Let me suggest that you look for the goodness
in the change and remember the bad things in the past so as to not repeat them
in the future.</font></p>

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

<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>

</div>
<!-- SEQ.=1,FOLIO='',FILE='C:\JMS\105540\08-29109-3\task3235994\29109-3-bc.htm',USER='105540',CD='Nov 24 04:01 2008' -->


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


<div>

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

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The merger with DFI will
significantly strengthen Kratos in the Huntsville market. MRD and DFI are both
about 280 employees. About half of the MRD employees are in Huntsville; nearly
all of the DFI employees work here. DFI brings our company new customers in
Missile Defense; Aviation and Missile Research and Engineering Center and at
Marshall Space Flight Center which add to our customer base. DFI adds depth in
advanced technologies and engineering to enhance our capability to support and
extend the life of legacy weapon systems. They give us strength in Modeling and
Simulation to improve our opportunities for growth in that important
marketplace.</font></p>

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

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">I have met with some of DFI&#146;s
customers. Their reputation is one of integrity, quality performance, and great
customer satisfaction. This also adds significantly to our company&#146;s
reputation.</font></p>

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

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Lastly, I am ready to turn the
reins over to Richard Selvaggio. Richard has been with us since February&nbsp;1996.
I have watched him take a two person task and grow it to a $50 million dollar
business in just over 10 years. This business will be in very capable hands.</font></p>

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

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">I am excited for you and
Kratos.</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman">&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 style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Sam
  Liberatore</font></p>
  </td>
  <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">President</font></p>
  </td>
  <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Madison
  Research Division</font></p>
  </td>
  <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Kratos
  Defense and Security</font></p>
  </td>
  <td width="50%" valign="top" style="padding:0in 0in 0in 0in;width:50.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
</table>

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

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">This communication is being made in respect of
the proposed transaction involving Kratos and DFI.&nbsp; In connection with the
proposed transaction, Kratos plans to file with the SEC a Registration
Statement on Form&nbsp;S-4 containing a Joint Proxy Statement/Prospectus, and,
Kratos plans to file with the SEC other documents regarding the proposed
transaction. The definitive Joint Proxy Statement/Prospectus will be mailed to
stockholders of Kratos and DFI.&#160; </font></p>

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

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">INVESTORS
AND SECURITY HOLDERS ARE URGED TO READ THE JOINT PROXY STATEMENT/PROSPECTUS AND
OTHER DOCUMENTS FILED WITH THE SEC CAREFULLY IN THEIR ENTIRETY WHEN THEY BECOME
AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED
TRANSACTION.</font></b></p>

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

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Investors and security holders will be able to
obtain free copies of the Registration Statement and the Joint Proxy
Statement/Prospectus (when available) and other documents filed with the SEC by
Kratos through the web site maintained by the SEC at <i>www.sec.gov</i>. In addition, investors and security holders
will be able to obtain free copies of the Registration Statement and the Joint
Proxy Statement/Prospectus (when available) and other documents filed with the
SEC from Kratos by directing a request to Kratos Defense&nbsp;&amp; Security
Solutions, Inc, ATTN: Investor Relations, 4810 Eastgate Mall, San Diego, CA
92121, or going to Kratos&#146; corporate website at <i>www.kratosdefense.com</i>.</font></p>

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

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Kratos and DFI, and their respective directors
and executive officers, may be deemed to be participants in the solicitation of
proxies in respect of the proposed transaction. Information regarding Kratos&#146;
directors and executive officers is contained in its annual proxy statement
filed with the SEC on May&nbsp;22, 2008. Additional information regarding the
interests of such potential participants will be included in the Joint Proxy
Statement/Prospectus and the other relevant documents filed with the SEC (when
available).</font></p>

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

<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>

</div>
<!-- SEQ.=1,FOLIO='',FILE='C:\JMS\105540\08-29109-3\task3235994\29109-3-bc.htm',USER='105540',CD='Nov 24 04:01 2008' -->


</body>

</html>
</TEXT>
</DOCUMENT>
</SUBMISSION>
