Pec Solutions (PECS) 10-K 2004 FY Annual report

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Exhibit 32.1

Certification of Principal Executive Officer
Pursuant to 18 U.S.C. 1350
(Section 906 of the Sarbanes-Oxley Act of 2002)

        I, David C. Karlgaard, President and Chief Executive Officer (principal executive officer) of PEC Solutions, Inc. (the "Registrant"), certify that to the best of my knowledge, based upon review of the Annual Report on Form 10-K for the period ended December 31, 2004 of the Registrant (the "Report"):

(1)

The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and



(2)

The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Registrant.

Date: March 16, 2005 /s/  DAVID C. KARLGAARD      Name: David C. Karlgaard

        This certification accompanies the Report pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and shall not be deemed filed by the Company for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section. This certification shall also not be deemed incorporated by reference into any filing under the Securities Act of 1933, as amended, or the Securities Exchange Act of 1934, as amended, except to the extent that the Company specifically incorporates it by reference.

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Certification of Principal Executive Officer Pursuant to 18 U.S.C. 1350 (Section 906 of the Sarbanes-Oxley Act of 2002)