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<tbody>
<tr class="odd">
<td></td>
<td colspan="41">OMB Approval No. 2700-0042</td>
<td colspan="8"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="24"></td>
<td colspan="13">1. CONTRACT ID CODE</td>
<td colspan="7">PAGE OF PAGES</td>
<td colspan="5"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="24">MODIFICATION OF CONTRACT</td>
<td colspan="13"></td>
<td colspan="3">1</td>
<td>2</td>
<td colspan="8"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="12">2. /MODIFICATION NO.</td>
<td colspan="8">3. EFFECTIVE DATE</td>
<td colspan="11">4. REQUISITION/PURCHASE REQ. NO.</td>
<td colspan="10">5. PROJECT NO. <em>(If applicable)</em></td>
<td colspan="8"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="12">0003</td>
<td colspan="8"></td>
<td colspan="11">4200008411</td>
<td colspan="10"></td>
<td colspan="8"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="9">6. ISSUED BY</td>
<td colspan="3">CODE</td>
<td colspan="8"></td>
<td colspan="12">7. ADMINISTERED BY <em>(If other than Item 6)</em></td>
<td colspan="5">CODE</td>
<td colspan="4"></td>
<td colspan="8"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="22"><p>National Aeronautics and Space Administration</p>
<p>Johnson Space Center</p>
<p>Attn: BG/Carol A. Devany</p>
<p>2101 NASA Road 1</p>
<p>Houston, TX 77058-3696</p></td>
<td colspan="22"></td>
<td colspan="5"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="44">8. NAME AND ADDRESS OF CONTRACTOR <em>(No., street,
county, State, and ZIP Code)</em></td>
<td colspan="5"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="44"><p>Johnson Engineering</p>
<p>Attn: Duncan Finlayson</p>
<p>12130 Hwy 3, Bldg 1</p>
<p>Webster, TX 77598-1504</p></td>
<td colspan="5"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="6">CODE</td>
<td colspan="14"></td>
<td colspan="9">FACILITY CODE</td>
<td colspan="12"></td>
<td colspan="8"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="4">(x)</td>
<td colspan="16">9A. AMENDMENT OF SOLICITATION NO.</td>
<td colspan="21">9B. DATED <em>(SEE ITEM 11)</em></td>
<td colspan="8"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="4"></td>
<td colspan="16"></td>
<td colspan="21"></td>
<td colspan="8"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="4"></td>
<td colspan="16">10A. MODIFICATION OF CONTRACT/ORDER NO.</td>
<td colspan="21">10B. DATED <em>(SEE ITEM 13)</em></td>
<td colspan="8"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="4">X</td>
<td colspan="16">NAS9-03044</td>
<td colspan="21">01/01/2003</td>
<td colspan="8"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="49">11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF
SOLICITATIONS</td>
</tr>
<tr class="even">
<td></td>
<td colspan="49"></td>
</tr>
<tr class="odd">
<td colspan="2"></td>
<td></td>
<td colspan="31">The above numbered solicitation is amended as set forth
in Item 14. The hour and date specified for receipt of Offers</td>
<td></td>
<td colspan="4"></td>
<td></td>
<td colspan="4">is not extended.</td>
<td colspan="6"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="49">Offers must acknowledge receipt of this amendment prior
to the hour and date specified in the solicitation or as amended, by one
of the following methods:</td>
</tr>
<tr class="odd">
<td></td>
<td colspan="13"></td>
<td colspan="4"></td>
<td colspan="30"></td>
<td colspan="2"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="13">(a) By completing Items 8 and 15, and returning</td>
<td colspan="2"></td>
<td colspan="31">copies of the amendment; (b) By acknowledging receipt
of this amendment on each copy of the offor</td>
<td colspan="3"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="49">submitted; or (c) By separate letter or telegram which
includes a reference to the solicitation and amendment numbers. FAILURE
OF YOUR ACKNOWLEDGEMENT TO</td>
</tr>
<tr class="even">
<td></td>
<td colspan="49">BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF
OFFERS PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION
OF</td>
</tr>
<tr class="odd">
<td></td>
<td colspan="49">YOUR OFFER. If by virtue of this amendment you desire
to change an offer already submitted, such change may be made by
telegram or letter, provided each telegram</td>
</tr>
<tr class="even">
<td></td>
<td colspan="49">or letter makes reference to the solicitation and this
amendment, and is received prior to the opening hour and date
specified.</td>
</tr>
<tr class="odd">
<td></td>
<td colspan="49">12. ACCOUNTING AND APPROPRIATION DATA <em>(If
required)</em></td>
</tr>
<tr class="even">
<td></td>
<td colspan="49">6100.2550 72-367-70-10-75 HSF5420003D
$2,100,000.00</td>
</tr>
<tr class="odd">
<td></td>
<td colspan="41">13. THIS ITEM APPLIES ONLY TO MODIFICATIONS OF
CONTRACTS/ORDERS,<br />
IT MODIFIES THE CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.(x)</td>
<td colspan="8"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="5">(x)</td>
<td colspan="41">A. THIS CHANGE ORDER IS ISSUED PURSUANT TO: (Specify
authority) THE CHANGES SET FORTH IN ITEM 14 ARE MADE IN THE</td>
<td colspan="3"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="5"></td>
<td colspan="12">CONTRACT ORDER NO. IN ITEM 10A.</td>
<td colspan="24"></td>
<td colspan="8"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="5"></td>
<td colspan="41">B. THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO
REFLECT THE ADMINISTRATIVE CHANGES (such as changes in paying
office,</td>
<td colspan="3"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="5">x</td>
<td colspan="41">appropriation date, etc.) SET FORTH IN ITEM 14,
PURSUANT TO THE AUTHORITY OF FAR 43.103(b).</td>
<td colspan="3"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="5"></td>
<td colspan="41">C. THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT
TO AUTHORITY OF:</td>
<td colspan="3"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="5"></td>
<td colspan="41"></td>
<td colspan="3"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="5"></td>
<td colspan="41">d. OTHER <em>(Specify type of modification and
authority)</em></td>
<td colspan="3"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="5"></td>
<td colspan="41"></td>
<td colspan="3"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="8"></td>
<td colspan="3"></td>
<td colspan="2"></td>
<td colspan="4"></td>
<td colspan="11"></td>
<td colspan="2"></td>
<td colspan="19"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="7"><strong>E. IMPORTANT:</strong> Contractor</td>
<td colspan="3">x</td>
<td colspan="3">is not,</td>
<td colspan="3"></td>
<td colspan="9">is required to sign this document and return</td>
<td colspan="2"></td>
<td colspan="21">copies to the issuing office.</td>
<td></td>
</tr>
<tr class="even">
<td></td>
<td colspan="49"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="49">14. description of t/modification <em>(Organized by UCF
section headings, including solicitation/contract subject matter where
feasible.)</em></td>
</tr>
<tr class="even">
<td></td>
<td colspan="49">This contract is modified to add funding for work to be
performed through 7/31/2003 and change the information in Section B.3
Contract Funding.</td>
</tr>
<tr class="odd">
<td></td>
<td colspan="49">Except as provided herein, all terms and conditions of
the document referenced in Item 9A or 10A, as heretofore changed,
remains unchanged and in full force and effect.</td>
</tr>
<tr class="even">
<td></td>
<td colspan="22">15A. NAME AND TITLE OF SIGNER <em>(Type or
print)</em></td>
<td colspan="22">16A. NAME AND TITLE OF CONTRACTING OFFICER <em>(Type or
print)</em></td>
<td colspan="5"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="22"></td>
<td colspan="19">Krystine Bui, Contracting Officer</td>
<td colspan="8"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="18">15B. CONTRACTOR/OFFEROR</td>
<td colspan="2">15C. DATE SIGNED</td>
<td colspan="16">16B. UNITED STATES OF AMERICA</td>
<td colspan="5">16C. DATE SIGNED</td>
<td colspan="8"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="3"></td>
<td colspan="11"></td>
<td colspan="4"></td>
<td colspan="2"></td>
<td colspan="3">BY</td>
<td colspan="12"></td>
<td></td>
<td colspan="6"></td>
<td colspan="7"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="18"><em>(Signature of person authorized to sign)</em></td>
<td colspan="2"></td>
<td colspan="16"><em>(Signature of Contracting Officer)</em></td>
<td colspan="5"></td>
<td colspan="8"></td>
</tr>
<tr class="odd">
<td></td>
<td colspan="19">NSN 7540-01-152-8070<br />
PREVIOUS EDITION UNUSABLE</td>
<td colspan="7">30-105<br />
JSC MS Word (Aug 95)</td>
<td colspan="15"><strong>STANDARD FORM 30</strong> (Rev. 10-83)<br />
Prescribed by GSA<br />
FAR (48 CFR) 53.243</td>
<td colspan="8"></td>
</tr>
<tr class="even">
<td></td>
<td colspan="21"></td>
<td colspan="24"><strong>STANDARD FORM 30 BACK</strong> (REV.
10-83)</td>
<td colspan="4"></td>
</tr>
</tbody>
</table>

NAS9-03044

Mod 0003

I. Contract Changes:

1.  Contract, Part I, Section B, Paragraph B.3 Contract Funding: (a)
    change the amount from \"\$1,927,393\" to \"\$3,859,393\" and
    estimated period of performance to \"1/01/03 to 7/31/03\"

2.  \(b\) change the amount from \"153,607\" to \"321,607\"

II\. Contract Funding

Total amount funded this action: \$2,100,000.00

Fee Cost

Prior Funding \$153,607 \$1,927,393

This action \$168,000 \$1,932,000

Total Funded \$321,607 \$3,859,393

Total amount funded: \$4,181,000

Total cumulative obligated on contract:

Total Fee Total Cost Total Obligated

Obligated Obligated

Basic \$153,607 \$1,927,393 \$2,081,000

Mod 1 0.00 0.00 \$2,081,000

Mod 2 0.00 0.00 \$2,081,000

Mod 3 \$321,607 \$3,859,393 \$4,181,000