UNITED STATES
                     SECURITIES AND EXCHANGE COMMISSION
                            Washington, DC 20549

                                  FORM 8-K
                              (AMENDMENT NO. 1)

                               CURRENT REPORT
   Pursuant to Section 13 or 15 (d) of The Securities Exchange Act of 1934



Date of Report (Date of earliest event reported)       April 11, 2005
                                                ------------------------------

                      ENGINEERED SUPPORT SYSTEMS, INC.
----------------------------------------------------------------------------
             (Exact Name of Registrant as Specified in Charter)


        MISSOURI                       0-13880                  43-1313242
(State of Incorporation)        (Commission File No.)         (IRS Employer
                                                           Identification No.)


201 Evans Lane, St. Louis, Missouri                               63121
(Address of principal executive officer)                        (Zip Code)


Registrant's telephone number including area code:  (314) 553-4000



Check the appropriate box below if the Form 8-K filing is intended to
simultaneously satisfy the filing obligation of the registrant under any of
the following provisions:

[  ]  Written communications pursuant to Rule 425 under the Securities Act
      (17 CFR 230.425)

[  ]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act
      (17 CFR 240.14a-12)

[  ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the
      Exchange Act (17 CFR 240.14d-2(b))

[  ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the
      Exchange Act (17 CFR 240.13e-4(c))






Item 1.01         Entry into a Material Definitive Agreement.

                  As previously reported on the current report on Form 8-K
                  filed on April 14, 2005, and as discussed in Item 5.02
                  below, Engineered Support Systems, Inc. (the "Company")
                  issued a press release on April 11, 2005 announcing that,
                  effective April 30, 2005, Michael F. Shanahan Sr. would
                  begin to serve in the capacity of non-executive Chairman
                  of the Board of Directors, a change from his then-current
                  position as executive Chairman of the Board of Directors,
                  and that, effective April 11, 2005, Daniel A. Rodrigues
                  was promoted to President and Chief Operating Officer of
                  the Company.

                  The Company has finalized the terms of a consulting
                  agreement, effective as of May 1, 2005, in connection with
                  the appointment of Mr. Shanahan to the position of
                  non-executive Chairman of the Board of Directors, and has
                  finalized the terms of an employment agreement, effective
                  as of April 11, 2005, with Mr. Rodrigues in connection
                  with his appointment to the position of President and
                  Chief Operating Officer of the Company. A description of
                  the consulting agreement and the employment agreement of
                  Messrs. Shanahan and Rodrigues, respectively, is set forth
                  in Item 5.02 below and a copy of each agreement is
                  attached hereto as Exhibit 10.1 and Exhibit 10.2,
                  respectively. The information set forth in Item 5.02
                  hereof, and the agreements filed as Exhibit 10.1 and
                  Exhibit 10.2 are incorporated herein by this reference.

                  This Form 8-K/A amends the current report on Form 8-K
                  filed on April 14, 2005, to include the material terms of
                  the consulting agreement and the employment agreement of
                  Messrs. Shanahan and Rodrigues, respectively.

Item 5.02         Departure of Directors or Principal Officers; Election of
                  Directors; Appointment of Principal Officers.

                  As previously reported on the current report on Form 8-K
                  filed on April 14, 2005, on April 11, 2005, the Company
                  announced that, effective April 30, 2005, Michael F.
                  Shanahan Sr. will serve in the capacity of non-executive
                  Chairman of the Board of Directors, a change from his
                  then-current position as executive Chairman of the Board
                  of Directors, and that, effective April 11, 2005, Daniel
                  A. Rodrigues had been promoted to President and Chief
                  Operating Officer of the Company.

                  The Company has entered into a consulting agreement,
                  effective May 1, 2005, by and between the Company and Mr.
                  Shanahan (the "Consulting Agreement"), in connection with
                  the appointment of Mr. Shanahan to the position of
                  non-executive Chairman of the Board of Directors, and has
                  entered into an employment agreement, effective April 11,
                  2005, by and between the Company and Mr. Rodrigues (the
                  "Employment Agreement"), in connection with Mr. Rodrigues'
                  appointment to the position of President and Chief
                  Operating Officer of the Company.

                  Consulting Agreement
                  --------------------

                  Pursuant to the terms of the Consulting Agreement, during
                  the term of the Consulting Agreement Mr. Shanahan will
                  provide consulting and advisory services pertaining to the
                  business and operations of the Company and will serve as
                  the non-executive Chairman of the Board of Directors of
                  the Company.


                  The initial term of the Consulting Agreement commenced May
                  1, 2005, and continues through April 30, 2006 (the
                  "Initial Term"). Thereafter, the Consulting Agreement
                  automatically renews for an additional one year period
                  through April 30, 2007 (the "Second Term"), unless
                  terminated by Consultant upon written notice at least 30
                  days prior to the expiration of the Initial Term.
                  Thereafter, the Consulting Agreement automatically renews
                  for successive one-year periods unless terminated by
                  either party upon written notice at least 30 days prior to
                  the expiration of any renewal term.

                  The Consulting Agreement may be terminated at any time by
                  Mr. Shanahan upon not less than 30 days' written notice,
                  or by the Company at any time with or without cause. In
                  the event that the Consulting Agreement is terminated by
                  the Company without cause, Mr. Shanahan would be entitled
                  to receive all compensation and benefits through the later
                  of the expiration of the Second Term or the renewal term
                  in effect at the time of termination, and such other
                  consideration as is expressly provided for in the
                  Consulting Agreement.

                  Mr. Shanahan's consulting fee under the Consulting
                  Agreement is $62,500 per month. The Consulting Agreement
                  also provides for payments in the amount of $52,500 per
                  month for 24 consecutive months to Mr. Shanahan's
                  designated beneficiary in the event Mr. Shanahan's death
                  occurs during the period that the Consulting Agreement is
                  in effect, as well as payments in the amount of $52,500
                  per month for a period not to exceed 60 consecutive months
                  in the event Mr. Shanahan becomes disabled during the
                  period that the Consulting Agreement is in effect.
                  Additionally, the Consulting Agreement provides that, upon
                  a termination by Mr. Shanahan by written notice, or upon a
                  termination by the Company without cause, or in the event
                  that either party determines not to renew the Consulting
                  Agreement for any reason, the Company will pay Mr.
                  Shanahan $52,500 per month for 24 months, effective as of
                  the date of termination of the Consulting Agreement. The
                  provisions defined within this paragraph are consistent
                  with the terms in Mr. Shanahan's prior Employment
                  Agreement.

                  In addition to the consulting fee, Mr. Shanahan is
                  entitled to: (i) reimbursement of reasonable and necessary
                  expenses incurred in the interest of the business of the
                  Company; (ii) a car allowance of not less than $1,800 per
                  month; (iii) participate in the Company's medical and
                  dental insurance programs along with his spouse for the
                  duration of his life and the life of his spouse; and (iv)
                  participate in the Company's life insurance, accidental
                  death and disability income benefit programs on the same
                  basis as executives of the Company who are entitled to
                  participate in the same.

                  The Consulting Agreement also contains non-compete and
                  non-diversion covenants that extend for so long as the
                  Consulting Agreement is in effect and during such period
                  after any termination that Mr. Shanahan is receiving
                  compensation from the Company pursuant to the Consulting
                  Agreement.


                  The description of the Consulting Agreement is qualified
                  in its entirety by reference to the complete agreement
                  that is attached as Exhibit 10.1 hereto and is
                  incorporated herein by reference.

                  Employment Agreement
                  --------------------

                  Pursuant to the terms of the Employment Agreement, Mr.
                  Rodrigues will serve as President and Chief Operating
                  Officer of the Company.

                  The initial term of the Employment Agreement commenced
                  April 11, 2005, and continues through April 10, 2008 (the
                  "Initial Term"). Thereafter, the Employment Agreement
                  automatically renews for successive one-year periods,
                  unless terminated by either party upon written notice at
                  least 30 days prior to the expiration of the initial term
                  or any renewal term.

                  Mr. Rodrigues' base salary under the Employment Agreement
                  is payable at a rate of $350,000 per year for the period
                  of April 11, 2005 through April 10, 2006. Additionally,
                  Mr. Rodrigues is entitled to earn an annual cash bonus in
                  an amount determined by the Company's Compensation
                  Committee. Mr. Rodrigues' target bonus for the fiscal year
                  ending October 31, 2005 is an amount equal to 60% of his
                  base salary. In addition to the cash bonus, for the
                  Company's fiscal year ending October 31, 2005, Mr.
                  Rodrigues is entitled to an award of 142,500 options with
                  a strike price equal to the closing price of the Company's
                  stock on June 6, 2005.

                  In addition to the salary and bonus compensation described
                  above, Mr. Rodrigues is entitled to: (i) reimbursement of
                  reasonable and necessary expenses; (ii) a car allowance as
                  determined by the Company's Board of Directors; (iii)
                  payment of monthly dues and charges for country club and
                  other membership privileges as approved by the Board of
                  Directors; and (iv) participation in the Company's
                  medical, life insurance, accidental death, disability
                  income, profit sharing trust and 401(k) programs and other
                  employee benefits on the same basis as other employees of
                  the Company.

                  The Employment Agreement provides for severance and
                  benefit participation in the event of a termination of the
                  Employment Agreement without cause. Upon such termination
                  without cause, Mr. Rodrigues is entitled to his full
                  monthly base salary at such level in effect as of the date
                  of his termination for a period of 12 months.
                  Additionally, during such 12-month period, Mr. Rodrigues
                  (and his eligible family members) shall be entitled to
                  continue to participate in and receive certain standard
                  employee benefits.

                  The Employment Agreement also provides that, in the event
                  of a change of control of the Company, Mr. Rodrigues is
                  entitled to a lump sum cash payment in an amount equal to
                  2.99 times his average annual compensation for the prior
                  five fiscal years, or the average of the full fiscal years
                  and annualized partial years of employment if less than
                  five years.

                  The Employment Agreement also contains non-compete and
                  non-diversion covenants that extend for the term of
                  employment and for a period of two years after termination
                  of employment.



                  The description of the Employment Agreement is qualified
                  in its entirety by reference to the complete agreement
                  that is attached as Exhibit 10.2 hereto and is
                  incorporated herein by reference.

Item 9.01         Financial Statements and Exhibits.

                  (c) The following exhibit is filed as part of this report:

                  Exhibit Number                   Description
                  --------------                   -----------

                      10.1          Consulting Agreement dated May 1, 2005 by
                                    and between Engineered Support Systems,
                                    Inc. and Michael F. Shanahan, Sr.

                      10.2          Employment Agreement dated April 11,
                                    2005 by and between Engineered Support
                                    Systems, Inc. and Daniel A. Rodrigues.




                                 SIGNATURES

         Pursuant to the requirements of the Securities Exchange Act of
1934, the registrant has duly caused this report to be signed on its behalf
by the undersigned hereunto duly authorized.


                                  ENGINEERED SUPPORT SYSTEMS, INC.


Date:     May 6, 2005              BY: /s/  Gary C. Gerhardt
     ---------------------            -----------------------------------------
                                            Gary C. Gerhardt
                                            Vice Chairman and Chief Financial
                                             Officer




                                EXHIBIT INDEX



         Exhibit Number                     Description
         --------------                     -----------

               10.1         Consulting Agreement dated May 1, 2005 by and
                            between Engineered Support Systems, Inc. and
                            Michael F. Shanahan, Sr.

               10.2         Employment Agreement dated April 11, 2005 by
                            and between Engineered Support Systems, Inc. and
                            Daniel A. Rodrigues.