Former President George W. Bush, left, and former first lady Laura Bush, along with President Barack Obama, second from right, and first lady Michelle Obama along with others, marking the 10th anniversary of the Sept. 11 attacks, pay their respects at the National September 11 Memorial at the World Trade Center site in Sunday, Sept. 11, 2011, in New York. (AP Photo/Matt Rourke)
Robert Peraza, who lost his son Robert David Peraza in the attacks at the World Trade Center, pauses at his son's name at the North Pool of the 9/11 Memorial before the 10th anniversary ceremony at the site, Sunday Sept. 11, 2011, in New York. (AP Photo/Justin Lane, Pool)
A police officer's white-gloved hand touches names on the wall surrounding the north pool of the 9/11 Memorial during the tenth anniversary ceremony at the site of the World Trade Center, Sunday Sept. 11, 2011, in New York. (AP Photo/David Handschuh, Pool)
Visitors hug near a memorial pool at the National September 11 Memorial at the World Trade Center site in New York, Sunday, Sept. 11, 2011. (AP Photo/Seth Wenig, Pool)
Former first lady Laura Bush, from left, former President George W. Bush, first lady Michelle Obama and President Barack Obama hold hands to their hearts during the national anthem as friends and relatives of the victims of 9/11 gather for a ceremony marking the 10th anniversary of the attacks at the National September 11 Memorial at the World Trade Center site, Sunday, Sept. 11, 2011, in New York. (AP Photo/Jason DeCrow)
Vasantha Velamuri, who's husband, Sankara Sastry Velamuri, was killed in the 9/11 terrorist attacks on the World Trade Center, mourns at the place where his name is inscribed on the Sept. 11 memorial at the World Trade Center site in New York during a ceremony to mark the 10th anniversary of the attacks Sunday, Sept. 11, 2011. (AP Photo/Carolyn Cole, Pool)
The Tribute in Light shines above lower Manhattan, the Statue of Liberty, and One World Trade Center, left, Saturday, Sept. 10, 2011, in New York. Sunday will mark the 10th anniversary of the Sept. 11, 2001, attacks on the United States. (AP Photo/Mark Lennihan)
A Port Authority police officer shares a light moment with children visiting from France at commuter train station near ground zero Saturday, Sept. 10, 2011, in New York. Heavily armed police remained a visible presence around New York on the eve of the 10th anniversary of the World Trade Center attacks. (AP Photo/Craig Ruttle)
Bruce Boudreau was not yet coach of the Washington Capitals when he was set to travel on one of the planes that was flown into the World Trade Center. A change in plans kept him off the flight. Ace Bailey, a hockey team scout and a good friend, died on the flight. (The Washington Times)
