What Impact Will The SR-72 Dark Star Have On Global Military Balance?

The Lockheed SR-71 Blackbird, designed to serve as a high-altitude supersonic reconnaissance aircraft, was designed to outclimb and outfly any interceptor the Soviet Union might be able to throw its way. The United States Air Force (USAF) eventually removed the aircraft from service in 1998 amid concerns over its increased obsolescence and vulnerability in a world of high-speed surface-to-air missiles.