STS-39 Mission Patch

40th Space Shuttle Mission 12th Flight of Discovery Crew: Michael L. Coats, Commander L. Blaine Hammond, Jr., Pilot Guion S. Bluford, Jr., Mission Specialist Richard J. Hieb, Mission Specialist Gregory J. Harbaugh, Mission Specialist Donald R. McMonagle, Mission Specialist Charles Lacy Veach, Mission SpecialistThis was the eight dedicated Department of Defense Mission in the Space Shuttle program. Unclassified payloads included Air Force Program-675 (AFP-675), Infrared Background Signature Survey (IBSS), Critical Ionization Velocity (CIV), Chemical Release Observation (CRO), Shuttle Pallet Satellite-II (SPAS-II) experiments and Space Test Payload-1 (STP-1).