Which year are you in? http://ixxx.in.net/ xnxxx The Groom Lake facility was also used for development of the U-2 spy plane’s successors, including the Lockheed A-12 Oxcart and the D-21 Tagboard. Later on, Area 51 served as a test site for the F-117 stealth fighter. To this day, the area surrounding the facility has been closely guarded, and the airspace is off-limits to civilian air traffic.