 1952 Washington, D.C. UFO incident

The 1952 Washington, D.C. UFO incident, also known as the Washington flap, the Washington National Airport Sightings, or the Invasion of Washington, 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.