President Barack Obama and first lady Michelle Obama walk to lay a wreath at the Wall of Names at the Flight 93 National Memorial near the crash site of Flight 93 in Shanksville, Pa., Sunday Sept. 11,... more 
President Barack Obama and first lady Michelle Obama walk to lay a wreath at the Wall of Names at the Flight 93 National Memorial near the crash site of Flight 93 in Shanksville, Pa., Sunday Sept. 11, 2011. (AP Photo/Amy Sancetta) less 
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Associated Press | Photo By Amy Sancetta
Sun, Sep 11, 2011 3:03 PM EDT