STS-33 was the fifth Space Shuttle mission dedicated to the Department of Defense. Discovery launched at night from Kennedy Space Center's Launch Complex 39B on November 22, 1989, with Frederick D. Gregory as commander, John E. Blaha as pilot, and Manley L. Carter Jr., F. Story Musgrave, and Kathryn C. Thornton as mission specialists. Because the primary payload was classified, NASA's public mission record limits the payload description to Department of Defense operations. Discovery completed 79 Earth orbits and landed on Runway 4 at Edwards Air Force Base on November 27 after a mission lasting just over five days.
Alerts are unavailable because this mission is no longer active.