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National Geographic gives you ''Top Secret'' access to the nerve center of the U.S. Military. From its frenzied construction during the height of World War II to the terrorist attacks of September 11 and the ensuing war on terrorism, get an intimate view of the history and intrigue of the headquarters for the United States Military. Inside the Pentagon is a fascinating, intimate view of the Pentagon's triumphs, defeats, and challenges.

Watch the full National Geographic: Inside the Pentagon movie online at no cost in high-definition (HD) quality. No downloads needed—simply click to play and experience the excitement with English subtitles included for your convenience.