A ball of fire explodes from one of the towers at the World Trade Center in New York after a plane crashed into it in this image made from television Tuesday Sept. 11, 2001. The aircraft was the second to fly into the tower Tuesday morning. Photo by ABC via APTN TV OUT NO CBC NO SALES (AP)
People run from the collapse of World Trade Center Tower Tuesday, Sept. 11, 2001 in New York. Photo by Suzanne Plunkett (AP)
People run from the collapse of World Trade Center Tower Tuesday, Sept. 11, 2001 in New York. Photo by Suzanne Plunkett (AP)