President Barack Obama participates in the wreath-laying ceremony at the Tomb of the Unknowns at Arlington National Cemetery on Memorial Day, May 27, 2013, in Arlington, Va. (AP Photo/Pablo Martinez ... more 
President Barack Obama participates in the wreath-laying ceremony at the Tomb of the Unknowns at Arlington National Cemetery on Memorial Day, May 27, 2013, in Arlington, Va. (AP Photo/Pablo Martinez Monsivais) less 
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Associated Press | Photo By Pablo Martinez Monsivais
Mon, May 27, 2013 12:46 PM EDT