On Sept. 11, 2001, the passengers and crew bravely decided to storm the cockpit of United Airlines Flight 93, preventing the terrorists who had taken control of the plane from flying it to Washington, D.C.

While Flight 93's passengers organized their revolt, a breakdown was unfolding inside the White House and the military.

On Sept. 11, 2001, four al Qaeda terrorists hijacked United Airlines Flight 93 shortly after it departed Newark International Airport.