Aeronautical engineer with The Martin Company - conducted wind tunnel tests for Air Force lifting reentry body and Titan launch vehicle programs, and Army Pershing missile program.

Aeronautical engineer with Lockheed Missiles and Space Company - directed wind tunnel tests for Navy Polaris and Poseidon programs, Air Force Reusable Launch Vehicle program, and proposal definition for the NASA Space Shuttle.

Aerospace systems engineer with Lockheed - provided systems engineering direction for the Navy Trident FBM program, Navy and Air Force advanced reentry systems, and for the NASA Assured Crew Return Vehicle program, procurement of the Russian FGB (Zarya) vehicle, development of the Solar Alpha Rotary Joints and other components for the International Space Station.