Today in History: The very last US Military flight of the SR-71 Blackbird took place - March 6, 1990 #Aviation pic.twitter.com/q2QUIDz7fV

— Regina Kenney ✈ (@AvWeekRegina) March 6, 2015

Edit: Fittingly, on its last flight the SR-71 shattered one final record, marking in the record books a time from Los Angeles, California, to Washington, DC, of just 1 hour, 4 minutes and 20 seconds. To achieve that, the SR-71 managed an average speed of 2,124 mph (3,420 kph).
fly.historicwings.com