UFO sightings during NATO war games in 1952 set the stage for the season finale of "Project Blue Book," the History channel's series about the U.S.' real-life UFO-hunting program.
UFO 'invasion' of NATO war games revealed in 'Project Blue Book' season finale
SPACE.com - 24 Mar 2020 23:10
UFO sightings during NATO war games in 1952 set the stage for the season finale of "Project Blue Book," the History channel's series about the U.S.' real-life UFO-hunting program.
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