Area 51 providers (including Russian providers and the IKONOS) are commercially available. These show the runway markings, base facilities, aircraft, and vehicles. When documents that mention the Nevada Test Site (NTS) and operations at Groom are declassified, mentions of Area 51 and Groom Lake are routinely redacted. One exception is a 1967 memo from CIA director Richard Helms regarding the deployment of three OXCART aircraft from Groom to Kadena Air Base to perform reconnaissance over North Vietnam. Although most mentions of OXCART's home base are redacted in this document, as is a map showing the aircraft's route from there to Okinawa, the
Area 51: Site 4 letting the bus tip over where the player must protect it. After the game is beaten, a short sequence of clips are played involving S.T.A.A.R. members, ending with the message, "S.T.A.A.R. Wants You!" similar to the real-world Uncle Sam army recruitment posters. The intro is only seen in attract mode as an intro loop. The end credits can only be seen after playing without putting initials. Area 51: Site 4 Area 51: Site 4 is a light gun arcade game developed by Atari Games in 1998. It is a sequel to the original "Area 51", picking up where that game