The 9/11 attacks happened on September 11, 2001. On that day, four coordinated terrorist attacks were carried out by al-Qaeda hijackers, who crashed planes into the Twin Towers of the World Trade Center in New York City, the Pentagon near Washington, D.C., and a field in Pennsylvania after passengers fought back. The first plane hit the North Tower at 8:46 a.m., and the attacks resulted in nearly 3,000 deaths, making it the deadliest terrorist attack in U.S. history.
