At 08:01 EDT, a Boeing 757 took off from Newark, New Jersey with 44 people onboard, including two pilots and five flight attendants. United Airlines Flight 93 was en route to San Francisco when hijackers, likely armed with knife-like instruments and a box they said was a bomb (as reported by Mark Bingham) took control of the plane.
Using his cell phone, passenger Jeremy Glick called his wife to say he and some other passengers had voted to tackle the hijackers. Thomas Burnett told his wife, "I know we’re all going to die...There’s three of us who are going to do something about it." And Todd Beamer, in his now-famous statement, said, "Let’s roll."
The heroic actions of Flight 93's passengers averted another strike on a Washington, D.C. target - most likely the Capitol. Instead, at 10:10 EDT the plane crashed in Shanksville, Pennsylvania - about 80 miles southeast of Pittsburgh.
Four planes, which left American cities within 12 minutes of each other, had caused the worst attack on U.S. soil since the Japanese bombed Pearl Harbor. (Be patient as this incredible BBC video loads.)