the lockheed sr-71 “blackbird” is a long-range, high-altitude, mach 3+ strategic reconnaissance aircraft developed and manufactured by the american aerospace company lockheed corporation. it was operated by both the united states air force (usaf) and nasa. the sr-71 was developed as a black project from the lockheed a-12 reconnaissance aircraft during the 1960s by lockheed’s skunk works division.Print Ready: No