september 11, 2001

2001 8:45 a.m.: A hijacked jet, America Flight 11, crashes into the north tower of the World Trade Center, tearing a gaping hole in the building and setting it afire.

2001 9:03 a.m.: Asecond hijacked airliner, United Flight 175, crashes into the south tower of the World Trade Center and explodes. Both buildings are burning.

2001 9:43 a.m.: A third hijacked aircraft, America Airlines Flight 77, crashes into the Pentagon, sending up a huge plume of smoke. Evacuation begine immediately.

2001 10:10 a.m.: A portion of the Pentagon collapses.

2001 10:10 a.m.: United Airlines Flight 93 crashes in Somerset County, Pennsylvania, southeast of Pittsburgh.

2001 10:28 a.m.: The World Trade Center's north tower collapses from the top down as if it were being peeled apart, releasing a tremendous cloud of debris and smoke.

2001 11:18 a.m.: American Airlines reports it has lost two aircraft. American Flight 11, a Boeing 767 flying from Boston to Los Angeles, had 81 passengers and 11 crew aboard. Flight 77, a Boeing 757 en route from Washington's Dulles International Airport to Los Angeles, had 58 passengers and six crew members aboard. Flight 11 slammed into the north tower of the World Trade Center. Flight 77 hit the Pentagon.

2001 11:26 a.m.: United Airlines reports that United Flight 93, en route from Newark, New Jersey, to San Francisco, has crashed in Pennsylvania, southeast of Pittsburgh. The airline also says that it is "deeply concerned" about United Flight 175.

2001 11:59 a.m.: United Airlines confirms that Flight 175, from Boston to Los Angeles, has crashed with 56 passengers and nine crew members aboard. Emergency personnel at the scene say there are no survivors.

2001 5:20 p.m.: The 47-story Building 7 of the World Trade Center complex collapses. The evacuated building is damaged when the twin towers across the street collapse earlier in the day. Other nearby buildings in the area remain ablaze.

In all 2,749 people died in the World Trade Center attack