U.S. intelligence agencies had no warning of terrorist attacks Little-known rule allows passengers to carry knives on commercial planes Consumers line up for gasoline amid fears supplies will be disrupted in wake of terrorist attacks Bush faces test of historic proportions in dealing with murderous attacks Twin Towers' steel and concrete construction couldn't have sustained the hit Grandeur of towers made them a target Barbara Olson, wife of U.S. solicitor general, dies in Pentagon attack Muslims Offer Help for Victims of Terrorist Attacks 'New York is crying' Watching with anguish - Oklahoma City bombing rescue workers react to terrorist attacks Most of world watches in horror Witnesses detail an 'unreal' scene Palestinians celebrate in streets Watching a new attack, Pearl Harbor survivors are reminded of the 'Day of Infamy' In Washington, chaos and fear as national capital tries to empty after attacks America's youth tries to make sense of attacks, national security threat Secret Service takes leaders to secure locations as government responds to attacks After attacks, U.S. embassies authorized to close; several in Mideast shut down President declares major disaster in New York after terrorist attacks City begins massive rescue effort as volunteers seek to help Secret Service takes leaders to secure locations as government responds to attacks American under lock down in wake of airborne terrorist attacks