| 8:45 a.m. | American Airlines Flight 11, Boston to Los Angeles with 92 people onboard, crashes into the north tower of the World Trade Center in New York City. |
| 9:03 a.m. | United Airlines Flight 175, Boston to Los Angeles with 65 people onboard, flies into the south tower of the World Trade Center. |
| 9:31 a.m. | Speaking from Florida, President George Bush pledges the United States will hunt down the guilty parties. |
| 9:40 a.m. | American Flight 77, en route from Dulles Airport, Washington DC, to Los Angeles with 64 people onboard, crashes into the Pentagon. |
| 9:48 a.m. | The U.S. Capitol and the West Wing of the White House are evacuated. |
| 9:49 a.m. | The Federal Aviation Administration bans all aircraft takeoffs in the United States. |
| 9:50 a.m. | South tower of the World Trade Center collapses. |
| 9:58 a.m. | Emergency operator in Pennsylvania receives a call from a passenger on United Flight 93, Newark to San Francisco with 45 people onboard, stating the plane was being hijacked. |
| 10:00 a.m. | United Flight 93 crashes about 80 miles southeast of Pittsburgh. |
| 10:29 a.m. | North tower of the World Trade Center collapses. |
| 11:00 a.m. | New York City Mayor Rudolph Giuliani orders lower Manhattan evacuated. |
| 11:40 a.m. | With U.S. military on nuclear alert, Bush taken to Barksdale Air Force Base in Louisiana. |
| 1:20 p.m. | Bush boards Air Force One for Offutt Air Force Base in Nebraska, headquarters of the U.S. Strategic Air Command. |
| 2:51 p.m. | U.S. military deploys missile destroyers and other equipment in New York and Washington. |
| 5:20 p.m. | Another World Trade Center building collapses. |
| 7:00 p.m. | Bush arrives in Washington. |
| 8:31 p.m. | Bush addresses the nation, vowing to punish "evil acts." |
