EXHIBIT 99.2

   CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report of Engineered Support Systems, Inc.
(the "Company") on Form 10-K for the year ended October 31, 2003 (the
"Report"), I, Gary C. Gerhardt, Vice Chairman and Chief Financial Officer of
the Company, certify, pursuant to Section 906 of the Sarbanes-Oxley Act of
2002 that:

(1) The Report complies with Sections 13(a) and 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 results of operations of the Company.


Date:  January 30, 2004

/s/ Gary C. Gerhardt
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Gary C. Gerhardt
Vice Chairman and Chief Financial Officer