1952 Washington D.C. UFO Incident
October 30th, 2010Via: Wikipedia:
The 1952 Washington D.C. UFO incident, also known as the Washington flap or the Washington National Airport Sightings, was a series of unidentified flying object reports from July 12 to July 29, 1952, over Washington D.C. The most publicized sightings took place on consecutive weekends, July 19–20 and July 26–27.