Ca introducere aici:
http://www.sciencechannel.com/tv-shows/the-unexplained-files/the-unexplained-files-videos/ex-faa-official-it-has-to-be-something-that-we-would-call-a-ufo.htm (http://www.sciencechannel.com/tv-shows/the-unexplained-files/the-unexplained-files-videos/ex-faa-official-it-has-to-be-something-that-we-would-call-a-ufo.htm)