U.S. Sailors stand in formation as Information Systems Technician 1st Class Brandon M. Donaldson, left, and Logistics Specialist 1st Class Dat Do place a wreath during a 9/11 commemoration ceremony at Misawa Air Base, Japan, Sept. 11, 2014. Terrorists hijacked four passenger aircraft Sept. 11, 2001. Two of the aircraft were deliberately crashed into the World Trade Center in New York; one was crashed into the Pentagon; the fourth crashed near Shanksville, Pa. Nearly 3,000 people died in the attacks.