EXHIBIT 99.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

      In connection with the Quarterly Report of Alion Science and Technology Corporation (the “Corporation”) on Form 10-Q for the period ending March 14, 2003 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, John M. Hughes, Chief Financial Officer of the Corporation, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that, to the best of my knowledge:

      (1) The Report fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

      (2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Corporation.

Date: April 28, 2003

By:  /s/ John M. Hughes

Name: John M. Hughes

Title: Chief Financial Officer

32