Photos: President, first lady remember 9/11
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Credit: Getty Images
ARLINGTON, VA - SEPTEMBER 11: U.S. President Barack Obama (R), and Secretary of Defense Leon Panetta (L), participate in a moment of silence during a 9/11 remembrance ceremony at the Pentagon, September 11, 2012 in Arlington, Virginia. U.S. President Barack Obama joined staff and family members at the Pentagon to commemorate the eleventh anniversary of the September 11 attacks. (Photo by Mark Wilson/Getty Images)
