Summary

  • The Lockheed SR-71 Blackbird was faster than a bullet, cruising at Mach 3+ or over 2,200 mph.
  • The SR-71 Blackbird does not slow down like a bullet, which loses velocity.
  • The United States Air Force retired the SR-71 Blackbird in 1998 and is now developing a new unmanned aerial vehicle called the SR-72.