On September 11, 2001, a group from the terrorist organization al-Qaeda hijacked four American aircraft. Two of these planes destroyed the World Trade Center Twin Towers, while another hit the Pentagon. The fourth plane, believed to be headed towards the White House, was recaptured by passengers and crashed into a field in Pennsylvania. During these attacks, 2,977 people were killed. Thereafter, the United States launched a “War on Terror,” which started in Afghanistan and spread to Iraq. Over the course of the next decade, the United States would continue to seek out terrorists and bring them to justice. On December 3, 2003, Saddam Hussein was captured. On December 30th, he was executed for crimes against humanity by the Iraqi people. On May 2, 2011, Osama bin Laden, the al-Qaeda leader responsible for the 9/11 attacks, was located and killed by United States Special Forces Seal Team Six. Along with various other terrorist leaders that had been captured or killed, al-Qaeda lost its power, but in its wake, organizations like ISIL (also called ISIS) found a following and started gaining influence. Although the war on terror is officially over, the United States maintains vigilance in the hopes of never repeating an experience like 9/11.