US President Barack Obama and 9/11 Widow Diane Wall

NEW YORK, NY - MAY 05: U.S. President Barack Obama hugs Diane Wall, whose husband Glen Wall perished in the twin towers on September 11, 2001, as other victims' family members look on at a wreath laying ceremony at Ground Zero Zero after Osama bin Laden was killed on May 5, 2011 in New York City. Obama also visited a New York Fire Department firehouse and met with families of victims of the terrorist attack on September 11, 2001during his visit to New York. (Photo by Mario Tama/Getty Images)