President Barack Obama and first lady Michelle Obama, joined by members of the White House staff pause during a moment of silence to mark the 11th anniversary of the Sept, 11th, Tuesday, Sept. 11, ... more 
President Barack Obama and first lady Michelle Obama, joined by members of the White House staff pause during a moment of silence to mark the 11th anniversary of the Sept, 11th, Tuesday, Sept. 11, 2012, on the South Lawn of the White House in Washington. (AP Photo/Carolyn Kaster) less 
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Associated Press | Photo By Carolyn Kaster
Tue, Sep 11, 2012 9:46 AM EDT