Attack: Sept. 11, 2001
Hijackers crash four planes into the World Trade Center, the Pentagon and a field in Pennsylvania, killing nearly 3,000 people. It was the largest terrorist attack ever on U.S. soil.
Breakthrough: Sept. 16, 2001
President George W. Bush names Osama bin Laden, head of the al-Qaeda network, as the mastermind. War in Afghanistan begins less than a month later. Bin Laden denies responsibility until late 2004.
Capture: May 2, 2011
SEAL Team 6 kills bin Laden during a night raid at his home in Abbottabad, Pakistan. After nearly a decade, America’s Most Wanted is no more.