Gallery: 3/47
A hijacked commercial plane crashes into the World Trade Center September 11, 2001 in New York. The landmark skyscrapers were destroyed in the attack. (SETH MCALLISTER/AFP/Getty Images)
Gallery: 3/47
A hijacked commercial plane crashes into the World Trade Center September 11, 2001 in New York. The landmark skyscrapers were destroyed in the attack. (SETH MCALLISTER/AFP/Getty Images)