NEW YORK, NY – SEPTEMBER 11: U.S. President Barack Obama (R), first Lady Michelle Obama (2nd R), former President George W. Bush (2L) and former first lady Laura Bush pause for a moment of reflection with family members of victims at the North Pool of the 9/11 Memorial during the tenth anniversary ceremonies of the September 11, 2001 terrorist attacks at the World Trade Center site, September 11, 2011 in New York City. New York City and the nation are commemorating the tenth anniversary of the terrorist attacks on lower Manhattan which resulted in the deaths of 2,753 people after two hijacked planes crashed into the World Trade Center. (Photo by Jefferson Siegel-Pool/Getty Images)