Home A man falls to his death from the World Trade Center after two planes hit the twin towers September 11, 2001 in New York City in an terrorist attack. (Photo by Jose Jimenez/Primera Hora/Getty Images) A man falls to his death from the World Trade Center after two planes hit the twin towers September 11, 2001 in New York City in an terrorist attack. (Photo by Jose Jimenez/Primera Hora/Getty Images)

A man falls to his death from the World Trade Center after two planes hit the twin towers September 11, 2001 in New York City in an terrorist attack. (Photo by Jose Jimenez/Primera Hora/Getty Images)

394263 22: (PUERTO RICO OUT) A man falls to his death from the World Trade Center after two planes hit the twin towers September 11, 2001 in New York City in an terrorist attack. (Photo by Jose Jimenez/Primera Hora/Getty Images)

New York City Police Officer Danny Shea, a military vet, salutes at the North pool of the 9/11 Memorial during the tenth anniversary ceremonies of the September 11, 2001 terrorist attacks at the World Trade Center site, September 11, 2011 in New York City. (Photo by David Handschuh-Pool/Getty Images)