Excerpt 1: Top Secret America

Preview: Season 29 Episode 18 | 2m 58s

On Obama's inauguration day, all of Top Secret America was on hand to protect the incoming president. "What was happening behind the scenes was phenomenal," "Washington Post" journalist Dana Priest tells FRONTLINE in "Top Secret America," coming Sept 6.

Aired: 09/06/11

Rating: NR

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