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 19â20 and July 26â27.
Longtime ufologist Richard H. Hall, who served as the assistant director of NICAP and as the director of the Fund for UFO Research, writes: “The summer 1952 UFO sighting wave was one of the largest of all time, and arguably the most significant of all time in terms of the credible reports and hardcore scientific data obtained.”
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