April 11, 1951🇺🇸Program
Military baseHistorical
United States: Air Defense Command memo urges all USAF units to report UFOs promptly
On April 11, 1951, the Air Defense Command sent a memo on “Unconventional Aircraft” to all USAF facilities, encouraging them to report sightings in a timely manner.
Background
The Air Defense Command issued a memo on “Unconventional Aircraft” to all USAF facilities, encouraging them to report sightings in a timely manner. The memo is described in Loren E. Gross's history of the 1951 sightings. The account follows the entry in George M. Eberhart's chronology UFOs and Intelligence (CUFOS) and the sources cited there; it is not an independent determination by From Beyond Space.