The failure of authorities to follow up on those first reports are now considered breakdowns in aviation security that contributed to the success of those attacks. Since then, regulations of airport operations and all other aspects of aviation security have been greatly enhanced to prevent any repeat of terrorist attacks using commercial airliners or any other type of aircraft (Larsen, 2007). United Flight 93 differed from the other three hijacked flights in that it was the only flight in which passengers had received information through cell phone calls informing them that the other hijacked flights had been used by the terrorists to crash into targets on the ground (Larsen, 2007; Longman, 2002). That information allowed several passengers, thought to have been led by Todd Beamer, to break into the cockpit and prevent the hijackers from reaching their intended targets in Washington.

Those...

Airport Renamed to Honor 9/11 Heroes; August 30, 2002. Retrieved October 28, 2008, at http://www.cbsnews.com/stories/2002/08/30/terror/main520326.shtml
Larsen, R. (2007). Our Own Worst Enemy: Asking the Right Questions About Security to Protect You, Your Family, and America. New York: Grand Central Publishing.

Longman, J. (2002). Among the Heroes: The Story of Flight 93 and the Passengers Who Fought Back. New York:…