"United 93" hits the multiplex this week, with harrowing dramatizations of what took place on board the hijacked plane on Sept. 11, 2001.
But some key facts about the flight's hijacking are left out of the movie entirely. An audiotape obtained exclusively by ABC News provides one of the clearest and most accurate records of the United 93 hijackers.
Click here to see the video.
Radio transmissions between United 93 and an air traffic controller in Ohio include sounds of blood-curdling...Full Story