Area 51 Palmdale facility. A search for a suitable testing site for the U-2 was conducted under the same extreme security as the rest of the project. He notified Lockheed, who sent an inspection team out to Groom Lake. According to Lockheed's U-2 designer Kelly Johnson: The lakebed made an ideal strip from which they could test aircraft, and the Emigrant Valley's mountain ranges and the NTS perimeter, about north of Las Vegas, protected the test site from visitors. The CIA asked the AEC to acquire the land, designated "Area 51" on the map, and add it to the Nevada Test Site.
Area 51 came to the Air Force's Project Blue Book, which investigated UFO sightings, through air-traffic controllers and letters to the government. The project checked U-2 and later OXCART flight records to eliminate the majority of UFO reports it received during the late 1950s and 1960s, although it could not reveal to the letter writers the truth behind what they saw. Similarly, veterans of experimental projects such as OXCART and NERVA at Area 51 agree that their work (including 2,850 OXCART test flights alone) inadvertently prompted many of the UFO sightings and other rumors: They believe that the rumors helped maintain secrecy