All photos are shown at 50%, click on them to view the full size photos. Rescue workers remove debris from the rubble of the World Trade Center towers September 13, 2001 in New York. The search for survivors and the recovery of the victims continues since Tuesday's terror attack. REUTERS/POOL/Beth A. Keiser A fireball explodes from one of the World Trade Center towers after a jet airliner crashed into the building Tuesday, Sept. 11, 2001, in New York. (AP Photo/Carmen Taylor) Emergency personnel and vehicles are deployed at the site of the World Trade Center in New York, Wednesday, Sept. 12, 2001. Rescue workers dug for bodies in mountains of rubble as the city struggled to recover from an airborne attack on the World Trade Center Tuesday that shut down the nation's financial capital and created a new skyline etched in terror. (AP Photo/Lawrence Jackson) Firefighters rest on the sidewalk across from the World Trade Center collapse site Thursday, Sept. 13, 2001, in New York. The search for survivors and the recovery of the victims continues since Tuesday's terror attack. REUTERS/POOL/Beth A. Kaiser Rescue workers move debris under the twisted steel of the World Trade Center towers Thursday, Sept. 13, 2001, in New York. The search for survivors and the recovery of the body's of victims continues in the wake of Tuesday's terrorist attack. (AP Photo/Beth A. Keiser, Pool) Rescue workers continue their search as smoke rises from the rubble of the World Trade Center, Thursday, Sept. 13, 2001, in New York. The search for survivors and the recovery of the victims continues since Tuesday's terrorist attack. (AP Photo/Beth A. Keiser) A firefighter rests on the bumper of his firetruck as he pauses while working at the site of the World Trade Center collapse Thursday, Sept. 13, 2001. Thousands remain missing in the rubble after the terrorist attacks on Tuesday. (AP Photo/Amy Sancetta) Mourners for the victims of Tuesday's terrorist attacks on New York and Washington D.C., including beginning second from the left, Annour Strauchon, of Quincy, Mass., Mary Lynch, Diane Boulay, and her sister Lisa Boulay, all of Boston, hold an U.S. flag and sing during an interfaith prayer vigil on Boston's City Hall Plaza, Thursday, Sept. 13, 2001. The gathering, attended by at least two thousand people, was attended by religious leaders from the Islamic, Jewish, Greek Orthodox, Catholic, and Protestant faiths, among others. (AP Photo/Steven Senne) A woman and a girl are part of a chain of candles and torches Thursday, Sept. 13, 2001 in the western German town of Duisburg during a memorial ceremony for the victims of Tuesday's terrorist attack in the U.S. (AP Photo/Michael Sohn) A man shows his American pride with a flag on his motorcycle on a road by Hartsfield International Airport in Atlanta, Georgia, September 13, 2001. The Federal Aviation Administration (FAA) has certified Hartsfield to reopen after all flights in the United States were grounded after terrorist attacks in New York City and Washington D.C. on September 11. REUTERS/Tami Chappell A Belarusian woman places lit candles in the ground after a special ceremony in downtown Minsk, Thursday, Sept. 13, 2001, in memory of the terrorist attack victims in New York and Washington. A ceremony was held in a cathedral in Minsk, followed by an hour of grieving over those killed in the attacks. (AP Photo/Sergei Grits)