U.S.

Associated Press
Vice President Joe Biden, third from left,  Interior Secretary Ken Salazar, second from left, and President of the Families of Flight 93, Patrick G. White, left, pauses after laying a wreath at The Wall of Names at the Flight 93 National Memorial in Shanksville, Pa., Tuesday, Sept. 11, 2012. (AP Photo/Gene J. Puskar)

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