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UFO's called 'Foo Fighters' by WWII pilots - http://www.warhistoryonline.com/articles/ufos-called-foo-fighters-by-wwii-pilots.html Aliens And Ufos, Ancient Aliens, Unidentified Flying Object, The Boogeyman, Alien Invasion, Sites Online, Ufo Sighting, Flying Saucer, Unsolved