8:14 a.m. -- United Airlines Flight 175, a Boeing 767 with 65 people on board, takes off from Logan for Los Angeles.

 

8:20 a.m. -- American Airlines Flight 77, a Boeing 757 with 64 people on board, takes off from Washington Dulles International Airport for Los Angeles.

 

8:37 a.m. -- Federal Aviation Administration notifies North American Aerospace Defense Command’s Northeast Air Defense Sector about suspected hijacking of American Flight 11.

 

8:42 a.m. -- United Airlines Flight 93, a Boeing 757 with 44 people on board, takes off from Newark International Airport for San Francisco.

 

8:46 a.m. -- American Flight 11 crashes into north tower of World Trade Center.

 

9:03 a.m. -- United Flight 175 crashes into south tower.

 

9:08 a.m. -- FAA bans all takeoffs nationwide for flights going to or through its New York Center airspace.

 

9:21 a.m. -- All bridges and tunnels into Manhattan are closed.

 

9:25 a.m. -- FAA command centin Herndon, Va., notifies headquarters about suspected hijacking of American Flight 77.

 

9:31 a.m. -- President Bush, in Florida, calls crashes an “apparent terrorist attack on our country.”

 

9:37 a.m. -- American Flight 77 crashes into Pentagon.

 

9:42 a.m. -- FAA orders all aircraft to land at nearest airport as soon as practical. More than 4,500

aircraft are in air at the time.

 

9:45 a.m. -- U.S. Capitol and White House’s West Wing evacuated.

 

9:59 a.m. -- South tower of trade center collapses.

 

10:03 a.m.  -- United Flight 93 crashes in Pennsylvania field.

 

10:28 a.m. -- North tower of trade center collapses.

 

11:02 a.m. -- New York Mayor Rudolph Giuliani orders evacuation of lower Manhattan.

 

2:50 p.m. -- Bush arrives at Strategic Command at Offutt Air Force Base in Nebraska.

 

5:20 p.m. -- Empty 47-story 7 World Trade Center collapses.

 

8:30 p.m. _ Bush addresses the nation from the White House, saying, "We will make no distinction between the terrorists who committed these acts and those who harbor them.”