Martin J. Fettman Status: Retired 12/31/1956 – Nationality: American Type: Payload Specialist Agency: National Aeronautics and Space Administration Martin Joseph Fettman (B.S., D.V.M., M.S., Ph.D., Diplomate, ACVP) is an American pathologist and researcher who flew on NASA Space Shuttle mission STS-58 aboard the Space Shuttle Columbia as a Payload Specialist.