The Radar Contact No One Could Explain (S18) | Ancient Aliens

By HISTORY

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During a routine 2004 training exercise off the coast of San Diego, crews aboard some of the world's most advanced warships detected a mysterious object on radar, sparking one of the most intriguing military encounters in recent history. See more in this clip from Season 18, Episode 7, "Underwater Alien Bases." Stay up to date on all of your favorite shows on The HISTORY Channel website at http://history.com/schedule #AncientAliens Subscribe for more from Ancient Aliens and other great The HISTORY Channel shows: http://histv.co/SubscribeHistoryYT Find out more about the show and watch full episodes on our site: https://histv.co/AncientAliens Check out exclusive The HISTORY Channel content: History Newsletter - https://histv.co/newsletter Website - https://histv.co/History Facebook - https://histv.co/Facebook Instagram - https://www.instagram.com/history TikTok - https://www.tiktok.com/@history "Ancient Aliens" explores the controversial theory that extraterrestrials have visite

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