United States invasion of Afghanistan
On the morning of 11 September 2001, al-Qaeda carried out four coordinated attacks on the United States. Four commercial passenger jet airliners were hijacked. The hijackers – members of al-Qaeda's Hamburg cell – intentionally crashed two of the airliners into the Twin Towers of the World Trade Center in New York City. Both buildings collapsed within two hours from fire damage related to the crashes, destroying nearby buildings and damaging others. The hijackers crashed a third airliner into the Pentagon in Arlington County, Virginia. The fourth plane crashed into a field near Shanksville, Pennsylvania, after some of its passengers and flight crew attempted to retake control of the plane, which the hijackers had redirected toward Washington, D.C., to target the White House or the United States Capitol. No flights had survivors. In total, 2,996 people, including the 19 hijackers, died and more than 6,000 others injured in the attacks. According to the New York State Health Department, 836 first responders, including firefighters and police personnel, had died as of June 2009.
Ahmed al-Ghamdi
On the morning of September 11, 2001, Ahmed left the hotel with Hamza, the two of them sharing a taxicab to get to Logan International Airport. There, Ghamdi showed his Virginia ID Card as identification, and boarded Flight 175 where he sat the furthest back of the hijackers, in seat 9D, helped to hijack it, and assisted as the plane crashed into the World Trade Center. Ahmed and Hamza al-Ghamdi pushed the passengers and crew to the back of the plane while Fayez Banihammad and Mohand al-Shehri killed the pilots Victor Saracini and Michael Horrocks allowing Marwan al-Shehhi to take control of the plane.