STS-51J Mission Patch

21st Space Shuttle Mission

1st Flight of Atlantis

Crew:

Karol J. Bobko, Commander

Ronald J. Grabe, Pilot

Robert L. Stewart, Mission Specialist

David C. Hilmers, Mission Specialist

William A. Pailes, Payload Specialist

This was the second dedicated flight for the Department of Defense. Mission elements were kept secret.