Osama bin Laden's Legacy: 13 Years of Terrorist Attacks

The Underwear Bomber
On Christmas Day 2009, would-be suicide attacker Umar Farouk Abdulmutallab, aboveleft, boarded a flight from Amsterdam to Detroit and tried to ignite himself with plastic explosives hidden inside his underwear. After fellow passengers heard "popping sounds" and watched Abdulmutallab's pant leg catch fire, they extinguished the flames and restrained him. Following his arrest, Abdulmutallab claimed ties with al-Qaeda, confessing that the organization had planned the bombing. Anwar al-Awlaki, above right, a top al-Qaeda official in Yemen — and one of the world's most hunted terrorists — was found to have several links to Abdulmutallab.

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