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Vice President Joe Biden, left, and Interior Secretary Ken Salazar arrive at the Flight 93 National Memorial in Shanksville, Pa., for a memorial service, Tuesday, Sept. 11, 2012. (AP Photo/Gene J. Puskar)

Remembering 9/11

September 12, 2012

Americans across the country paused Tuesday to mark the 11th anniversary of the Sept. 11, 2001 terror attacks.