President Barack Obama and first lady Michelle Obama walk away after visiting the crash site of Flight 93 during their visit to the Flight 93 National Memorial Sunday, Sept., 11, 2011, in Shanksville,... more 
President Barack Obama and first lady Michelle Obama walk away after visiting the crash site of Flight 93 during their visit to the Flight 93 National Memorial Sunday, Sept., 11, 2011, in Shanksville, Pa., on the 10th anniversary of Sept. 11. (AP Photo/Pablo Martinez Monsivais) less 
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Associated Press | Photo By Pablo Martinez Monsivais
Sun, Sep 11, 2011 1:43 PM EDT