National Geographic Chasing UFOs - Dirty Secrets [HD Documentary]

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A team of trained investigators sets out to uncover the truth about UFOs. But they're not just looking for more stories on extraterrestrial activity—they want answers. Risking it all, this team of scientists and UFO researchers investigate and dissect some of the most mysterious sightings on the planet to unearth stunning new evidence. The data they collect on these adventures paints an entirely new picture of what we know about these strange lights in the sky. Tags: full episodes,long,documentary,hd,full,hd documentary,hd documentary long,full documentary,documentary full,documentary long,hd documentary full,full documentary hd,national geographic,ufo,ufos,ufo documentary,documentary ufo,documentary ufo 2013,documentary ufo bbc,ufos documentary,chasing ufos season 2,chasing ufos,chasing ufos full episodes

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