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Space Shuttle Discovery launches on STS-39, the first unclassified shuttle mission for the United States Department of Defense.
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Space Shuttle Discovery
Space Shuttle orbiter (1984–2011)
Space Shuttle Discovery is a retired American Space Shuttle orbiter. The spaceplane was one of the orbiters from NASA's Space Shuttle program and the third of five fully operational orbiters to be built. Its first mission, STS-41-D, flew from August 30 to September 5, 1984. Over…Source: Wikipedia (CC BY-SA)
STS-39
1991 American crewed spaceflight for the Department of Defense
STS-39 was the twelfth mission of the NASA Space Shuttle Discovery, and the 40th orbital shuttle mission overall. The primary purpose of the mission was to conduct a variety of payload experiments for the U.S. Department of Defense (DoD).Source: Wikipedia (CC BY-SA)
United States Department of Defense
Executive department of the US federal government
The United States Department of Defense is an executive department of the U.S. federal government charged with coordinating and supervising the six U.S. armed services: the Army, Navy, Marines, Air Force, Space Force, the Coast Guard for some purposes, and related functions and…Source: Wikipedia (CC BY-SA)
April 28
Day of the year
April 28 is the 118th day of the year in the Gregorian calendar; 247 days remain until the end of the year.Source: Wikipedia (CC BY-SA)