The Triangle Mystery (S2, E2) | Unidentified: Inside America's UFO Investigation

Former intelligence officer Chris Mellon spearheads an investigation into one of the UFO phenomenon's great mysteries. Giant triangles allegedly capable of incredible acceleration and speeds have been seen all over the world. See more in Season 2, Episode 2, "The Triangle Mystery." Chapters 00:00...

41 min - Archaeology & Mysteries - HISTORY

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