The #Lockheed #SR_71 was an advanced, long-range, #Mach_3 strategic reconnaissance aircraft developed from the Lockheed A-12 and YF-12A aircraft by the Lockheed Skunk Works.
The SR-71 was unofficially named the #Blackbird, and called the Habu by its crews. Clarence “Kelly” Johnson was responsible for many of the design’s innovative concepts.
A defensive feature of the aircraft was its high speed and operating altitude, whereby, if a surface-to-air #missile launch were detected, standard #evasive action was simply to #accelerate.
The SR-71 line was in service from 1964 to 1998, with 12 of the 32 aircraft being #destroyed in accidents, though none were lost to enemy action.