11 Timeline | 9

– News cameras capture a gaping hole in the North Tower. Most initially believe it is a tragic accident.

– President Bush addresses the nation from the school, calling the events an “apparent terrorist attack.” 9 11 timeline

– Five stories of the Pentagon collapse due to fire and damage. Aftermath & Immediate Response 12:16 PM – All commercial air traffic in the U.S. is successfully grounded. Over 4,500 flights are diverted or canceled. – News cameras capture a gaping hole in the North Tower