World Trade Center site
On the morning of September 11, 2001, Islamic terrorists affiliated with Al-Qaeda hijacked American Airlines Flight 11 and United Airlines Flight 175, both which were en route to Los Angeles, and intentionally crashed them into the two main towers of the World Trade Center. The towers collapsed within two hours of the collisions. 2,606 people, including 2,192 civilians, 71 law enforcement officers, and 343 firefighters, who were in the towers and in the surrounding area died in the attacks, as well as 147 civilians and the 10 hijackers aboard the two airliners. After the collapse of the World Trade Center, hospital workers and law enforcement officers began referring to the World Trade Center site as "Ground Zero".
Foreign policy of the Bill Clinton administration
On February 26, 1993, thirty-six days after Clinton took office, terrorists who the CIA would later reveal were working under the direction of Osama bin Laden detonated a timed car bomb in the parking garage below Tower One of the World Trade Center in New York City (see the World Trade Center bombing). Clinton responded by ordering his National Security Council, under the direction of Anthony Lake, and the FBI to find and punish those responsible. The FBI was able to quickly identify the vehicle used in the bomb from a remnant found in the rubble: a Ryder rental van, which had been reported stolen in Jersey City, New Jersey the day before. The truck was rented by Mohammed Salameh, whom the FBI immediately detained. Similar evidence led to the arrests of other plotters behind the attack, including Nidal Ayyad, Mahmoud Abouhalima, Ahmad Ajaj, and Ramzi Yousef—who was identified as the key player in the bombing. All men were tried and convicted for the bombing and other terrorists activities.