STS-51C Mission Patch

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15th Space Shuttle Mission 3rd Flight of Discovery Crew: Thomas K. Mattingly II, Commander Loren J. Shriver, Pilot James F. Buchli, Mission Specialist Ellison S. Onizuka, Mission S pecialist Gary E. Payton, Payload Specialist This was the first dedicated Department of Defense mission. Elements of the mission were kept secret. However, it was reported that a U.S. Air Force Inertial Upper Stage (IUS) booster successfully deployed a secret payload. Show more