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http://www.youtube.com/channel/UC9MAhZQQd9egwWCxrwSIsJQAmerica’s Book of Secrets: The White House – An Impenetrable Fortress (Part 5) | History -

An inside look at the secret protocols, elite security and hidden history of the world's public of private residences. What is the most secret room in the White House and what makes it so powerful? Find out in Season 1, Episode 2, "The White House." #AmericasBookofSecrets
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