NASA's Johnson Space Center housed the Apollo Mission Control Center, including Mission Operations Control Room 2, later designated Flight Control Room 2 during Space Shuttle support from 1982 to 1992. The site was designated a National Historic Landmark and recognized for national significance in the history of the United States of America. Mission Operations Control Room 2 provided its first operational support for Gemini 4 on June 3, 1965, and supported Gemini 4, Gemini 6, Gemini 7, Gemini 8, Gemini 9, Gemini 10, Gemini 11, Gemini 12, Apollo 6, Apollo 8, Apollo 9, Apollo 10, Apollo 11, Apollo 12, Apollo 13, Apollo 14, Apollo 15, Apollo 16, Apollo 17, Shuttle ALT, STS-5, STS-6, STS-7, STS-8, STS-9, STS-41-B, STS-41-C, STS-41-G, STS-51-C, STS-51-D, STS-51-G, STS-51-I, STS-51-J, STS-61-B, STS-51-L, STS-27, STS-28, STS-33, STS-36, STS-38, and STS-53. The center is associated with the Apollo 11 lunar landing on July 20, 1969, and Apollo 6 was an unmanned test flight.