The following events happened in the year 1951:
- UK response to alien presence
- US response to alien presence
- April 4, 1951-The Psychological Strategy Board (PSB) is established under the Truman administration to develop disinformation protocols.
- Secretive continuation of Project Grudge, conducted by the USAF, comes under wraps.
- UFOdna, UFO sightings in 1951
- ↑ BBC, Churchill ordered UFO cover-up, National Archives show, 5 August 2010
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