Exhibit 99.1

                            CERTIFICATION 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 Lockheed Martin Corporation (the
"Corporation") on Form 10-Q for the period ending June 30, 2002 as filed with
the Securities and Exchange Commission on the date hereof (the "Report"), I,
Vance D. Coffman, Chairman and Chief Executive 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:

    (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.

/s/ Vance D. Coffman
--------------------

Vance D. Coffman
Chairman and Chief Executive Officer
August 8, 2002