Blackbird

The American ''spy'' aircraft, the SR-71 ''Blackbird'' was deliberately designed to be the world''s fastest and highest-flying aircraft and has never been approached since. It was conceived in the late 1950s by Lockheed Martin''s highly secret ''Skunk Works'' team under one of the most (possibly the most) brilliant aero designers of all time, Clarence ''Kelly'' Johnson.

Once fully developed in aro...