Women wearing dust masks flee across New York's Brooklyn Bridge from Manhattan to Brooklyn following the collapse of both World Trade Center towers on Sept. 11, 2001.
Pedestrians on Beekman Street flee the area of the collapsed World Trade Center towers in lower Manhattan following the terrorist attacks on the New York landmarks on Sept. 11, 2001.
A couple passes the parking garage on Beekman Street in New York, Sunday, Sept. 4, 2011, the area that was choked by smoke and dust after the collapse of the World Trade Center towers in 2001.
Pedestrians on Park Row flee the area of the World Trade Center as the center's south tower collapses following the terrorist attack on the New York landmark on Sept. 11, 2001.
Survivors of the World Trade Center terrorist attacks make their way through smoke, dust and debris on Fulton St., about a block from the collapsed towers on Sept. 11, 2001, in New York.
A piece of debris, possibly from one of the crashed airliners, lies on the corner of Murray Street in lower Manhattan near the World Trade Center site in New York on Sept. 11, 2001.
With the skeleton of the World Trade Center twin towers in the background, New York City firefighters work amid debris on Cortlandt Street after the terrorist attacks on Sept. 11, 2001.
A subway entrance is covered in debris at the intersection of Church and Dey Streets after the World Trade Center collapse in New York City on Sept. 11, 2001.
The new subway station on Church and Dey Streets nearly 10 years later, as construction continues across the street at the World Trade Center site, Sunday, Sept. 4, 2011.
The skyline of lower Manhattan Sunday, Sept. 4, 2011, where the towers of the World Trade Center stood is still under going construction all around the area.
Firefighters and urban rescue workers work at the site of collapsed World Trade Center towers after the terrorist attacks in New York, on Sept. 19, 2001.
