Single Seat Aircraft built as CIA U-2 replacement.
28 Feb 62 - Prototype trucked to Groom Lake (Area 51)
26 Apr 62 - First Flight
Nov 65 - Declared operational
22 May 67 - 1st CIA A-12 arrives at Kadena AFB
31 May 67 - 1st CIA A-12 overflight of North Vietnam
8 Mar 68 - 1st USAF SR-71 arrives at Kadena AFB
8 May 68 - Last CIA A-12 flight from Kadena AFB