Area 51, a highly classified remote detachment of Edwards Air Force Base, was built in 1955 as part of the more substantial Nevada Test and Training Range complex, initially to serve as a test facility for the U-2 Spy Plane. Although it has never been declared a “top secret base,” the area is highly protected and is restricted to both land and air use. Other well-known aircraft tested at Area 51 include the Archangel-12, the F-117 Nighthawk stealth fighter, and even the SR-71 Blackbird (maybe that’s how the X-Men got on board with it).
Area 51 is the common name of a highly classified United States Air Force facility located within the Nevada Test and Training Range. The facility is officially called Homey Airport or Groom Lake, named after the salt flat situated next to its airfield .