A look back at September 11, 2001 attack.
September 11, 2001 Attacks
As America reflects on the September 11 attacks of 2001, here are some of the iconic images from that tragic day.
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People walk away from the World Trade Center towers in New York City after both towers were hit by airplanes which crashed into the buildings.
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People run from the collapse of World Trade Center Tower in New York.
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A fireball explodes from one of the World Trade Center towers after a jet airliner crashed into the building in New York.
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U.S. President George W. Bush listens as White House Chief of Staff Andrew Card informs him of a second plane hitting the World Trade Center, while Bush was conducting a reading seminar at the Emma E. Booker Elementary School in Sarasota, Florida.