The World Trade Center burns after terrorists attacked the iconic buildings on September 11, 2001. Minutes after this photo was taken the entire structure collapsed.

A taxi's radio broadcasts the news as people watch smoke pour out of World Trade Center One.

Firefighters are surrounded by smoke and debris following the collapse of towers.

The remains of the World Trade Center is barely visible through the thick smoke and dust.

Firefighters make their way through the rubble.

Emergency Personal respond to the scene.

A firefighter walks among the wreckage.

World Trade Center 6 burns out of control.

A police officer rides through the paper debris which was blown out the buildings.

Smoke billows around the World Financial Center buildings.

Construction workers are dwarfed by the huge pile of beams and debris of the World Trade Center.

An American flag draped from the Bankers Trust building is seen though the shell of the World Trade Center 4.

People walking along a smoke-filled Wall Street make their way to work as the New York Stock Exchange reopens one week following the 9/11 attacks.

Leaflets of missing persons are posted by friends and family members who are seeking information about loved ones who may or may not have vanished in the twin towers.

A woman holds a picture of her brother who has been missing since September 11th.

A mother and son are among the victims' family members attending the inter-faith prayer service held at Yankee Stadium to honor those who lost their lives in the terrorist attack.

Construction workers attend a memorial service held at Ground Zero on the third month anniversary of the terrorist attack.