SECURITIES AND EXCHANGE COMMISSION

                              WASHINGTON, DC 20549

                                    FORM 8-K

                                 CURRENT REPORT

     Pursuant to Section 13 or 15 (d) of the Securities Exchange Act of 1934


                         Date of Report: April 30, 2004


                                ESSEX CORPORATION
             (Exact name of Registrant as specified in its charter)



Commission File No.  0-10772


         Virginia                                                    54-0846569
(State or other jurisdiction of                           (IRS Employer ID No.)
incorporation or organization)



         9150 Guilford Road
         Columbia, Maryland                                          21046-2306
(Address of principal executive office)                              (Zip Code)



Registrant's telephone number, including area code:              (301) 939-7000





                                ESSEX CORPORATION



Item 2.    Acquisition or Disposition of Assets

           Pursuant  to an  Agreement  and Plan of Merger  dated as of April 28,
           2004 (the "Agreement") by and among the Registrant,  its wholly-owned
           subsidiary  ("Merger Sub"),  Computer  Science  Innovations,  Inc., a
           Florida  corporation   ("CSI"),   and  Computer  Science  Innovations
           Employee Stock  Ownership  Plan,  Merger Sub was merged with and into
           CSI with CSI as the surviving corporation (the "Merger").  The Merger
           became  effective as of April 30,  2004.  The terms of the Merger are
           contained  in the  Agreement,  which is included  herewith as Exhibit
           2.1.

Item 7.    Financial Statements and Exhibits

           (a)             The  financial  statements  required by this Item are
                           not included in this  initial  report on Form 8-K but
                           will be filed by amendment  not later than sixty days
                           after  the date that the  initial  report on Form 8-K
                           must be filed.

           (b)             The  pro  forma   financial   information   of  Essex
                           Corporation required by this Item are not included in
                           this initial  report on Form 8-K but will be filed by
                           amendment  not later  than  sixty days after the date
                           that the initial report on Form 8-K must be filed.

           (c)             Exhibits

           Exhibit 2.1     Agreement and Plan of Merger among Essex Corporation,
                           CSI Acquisition Corp.,  Computer Science Innovations,
                           Inc. and Computer Science  Innovations Employee Stock
                           Ownership Plan, dated April 28, 2004

           Exhibit 99.1    Press release dated April 30, 2004


                                   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.

                                ESSEX CORPORATION
                                  (Registrant)



                            /S/ LEONARD E. MOODISPAW
                            -------------------------------------
DATE:  May 3, 2004          Leonard E. Moodispaw
                            President and Chief Executive Officer





                                ESSEX CORPORATION


                                  EXHIBIT INDEX

                    (Pursuant to Item 601 of Regulation S-X)

Exhibit
NUMBER          DESCRIPTION AND METHOD OF FILING

2.1             Agreement and Plan of Merger among Essex Corporation,  CSI
                Acquisition Corp.,  Computer Science  Innovations,  Inc. and
                Computer Science Innovations Employee Stock Ownership Plan,
                dated as of April 28, 2004, filed herewith.

99.1            Press release dated April 30, 2004, filed herewith.