[MHGinTN]

"Probably what crashed at Rozwell in 40s. or 50s." Um, Roswell happened in 1947. Several years after that incident our military was still very concerned that they did not know what or how these things were doing what they were doing, like invading secured air space over nuclear sites.

If you are actually interested in the realities, do a Google search for Richard Dolan's ten documents which prove the military's bewilderment. IF research programs were doing work on the technologies, they would have begun doing so AFTER the tech was discovered from 'other sources' or human research programs. Today, we have a pretty good handle on the leading edge of tech during the 30s and 40s, so the 'circular flying crafts were not of Earth origin in 1947.

[Kackikat]

I think that documentary on the ‘flying saucer’ being tested might have been the Discovery channel.

http://www.popularmechanics.com/technology/aviation/military/declassified-americas-secret-flying-saucer-15075926