The attacks began with the hijacking of four commercial airliners departing from East Coast airports, fueled for flights to California. With jet fuel capacities of nearly 24,000 U.S. gallons (91,000 liters) or 144,000 pounds (65,455 kilograms), each aircraft effectively became an incendiary guided missile.
American Airlines Flight 11, a Boeing 767-223, wide-body aircraft crashed into the north side of the North Tower of the World Trade Center (WTC) at 8:46:30 a.m. local time (which was Eastern Daylight Time, or 12:46:30 UTC).
United Airlines Flight 175, a Boeing 767-222, crashed into the South Tower at 9:02:59 a.m. local time (13:02:59 UTC), an event covered live by television broadcasters from around the world who had their cameras trained on the buildings after the earlier crash.
American Airlines Flight 77, a Boeing 757-223, crashed into the Pentagon at 9:37:46 a.m. local time (13:37:46 UTC).
United Airlines Flight 93, a Boeing 757-222, crashed in a field in southwest Pennsylvania just outside of Shanksville, about 150 miles (240 km) northwest of Washington, D.C., at 10:03:11 a.m. local time (14:03:11 UTC), with parts and debris found up to eight miles away. The crash in Pennsylvania is believed to have resulted from the hijackers either deliberately crashing the aircraft or losing control of it as they fought with the passengers.
No one onboard any of the hijacked aircraft survived.
The fatalities were in the thousands, with 2,973 people killed, including 246 on the four planes, 2,602 in New York City in the towers and on the ground, and 125 at the Pentagon. Among the fatalities were 343 New York City Fire Department firefighters, 23 New York City Police Department officers, and 37 Port Authority police officers. An additional 24 people remain listed as missing in the attack on the World Trade Center to this day.