U.F.O.

   Unidentified Flying Object. The Air Force defines it as: "an airborne object that by performance, aerodynamic characteristics, or unusual features, does not conform to known aircraft or missiles, or does not correspond to Air Force definitions of familiar or known objects or unidentified aircraft." Most people believe that U.F.O.'s are either spaceships from another planet, or time travelers from our future. Also called Flying Saucer. See Mother Ship, ET, Reptoids, MIB, Area 51, Foo Fighters, Area S-4, Marfa Lights, Element 115, Roswell Incident, UFOnauts, Deconstructing, Tunguska, Cattle Mutilation, Project Bluebook and Reverse Engineering.