This timeline describes what happened in the U.S. on September 11, 2001.
American Airlines (AA) Flight 11 takes off from Boston, headed for Los Angeles
Last routine radio communication from AA Flight 11; likely takeover
United Airlines Flight 175 takes off from Boston, headed for Los Angeles
Flight attendant on AA Flight 11 notifies American Airlines of hijacking
American Airlines Flight 77 takes off from Washington Dulles International Airport for Los Angeles
Flight controllers in Boston notify the military of AA flight 11 hijacking
United Airlines Flight 93 takes off from Newark, headed to San Francisco
“A second plane hit the second tower. America is under attack” - White House Chief of Staff Andrew Card whispers to President Bush. The president, who was reading to school children in Florida, was already aware that a plane, perhaps in an accident, had hit the North Tower
United Flight 93 receives warning from United Airlines about possible cockpit intrusion
Likely takeover of United Flight 93
