This photo by Roberto Robanne shows the impact of one of the airplanes hitting the World Trade Center in New York City on Sept. 11, 2001.
This photo from April 27, 2012, shows the Empire State Building (center) and One World Trade Center (rear right) in New York. (Associated Press)
This photo from April 27, 2012, shows the Empire State Building (center) and One World Trade Center (rear right) in New York. (Associated Press)
One World Trade Center, now 90 stories high and on its way to being the nation's tallest building, stands above the New York skyline, Monday, Jan. 30, 2012. The Port Authority of New York and New Jersey is aiming for a completion date in the fall of 2013. (AP Photo/Mark Lennihan)
"What a great way to get back on the horse. It was hard, but it was what it's supposed to be," actress Sandra Bullock said of her role in "Extremely Loud & Incredibly Close." She plays a wife whose husband dies at the World Trade Center in New York on Sept. 11. Thomas Horn, in a scene with Miss Bullock, plays their son. (Warner Bros. Pictures via Associated Press)
In a Friday, Nov. 4, 2011, photo, Douwe Blumberg, left, watches as Todd Jenkins puts a patina on Blumberg's statue honoring U.S. Special Forces serving in Afghanistan, in Norman, Okla. It was expected to be unveiled on Veteran's Day near the World Trade Center site in New York. (AP Photo/The Oklahoman, Steve Sisney)
REMINDER: Now-retired Lt. Col. Max Bowers, Special Forces ground commander, advises Northern Alliance warlords in Afghanistan in November 2001. He was carrying with him a piece of the World Trade Center at the time. (Army Special Operations Command)
REMINDER: Now-retired Lt. Col. Max Bowers, Special Forces ground commander, advises Northern Alliance warlords in Afghanistan in November 2001. He was carrying with him a piece of the World Trade Center at the time. (Army Special Operations Command)
The special operations team Col. Bowers personally selected all signed a flag, which he carried on the mission, along with a piece of World Trade Center steel. (Army Special Operations Command)
