Seven U.S. Air Force C-17 Globemaster III aircraft, 11 KC-10 Extender aircraft and four C-5 Galaxy aircraft assigned to the 60th Air Mobility Wing line up at Travis Air Force Base, Calif., Sept. 11, 2013, for the Freedom Launch honoring the victims of the 9/11 terrorist attacks. The first plane departed at 8:46 a.m., the same time terrorists crashed American Airlines Flight 11 into the North Tower of the World Trade Center, with the remaining 21 aircraft launching consecutively during a 36-minute time frame. 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.