Following the U-2 spy plane came the development of the A-12 and SR-71 - for the CIA and USAF respectively.These aircraft ...

The prototypes, however, lived on in NASA’s facilities, where they were used for flight research into aerodynamics, propulsion, structures, noise tests, and controls. While the SR-71 Blackbird ...

NASA released video footage of the SR-71 Blackbird, the high-altitude recon aircraft capable of reaching speeds over Mach 3. More from Military & Defense NASA released video footage of the SR-71 ...