Terrorists attack on World Trade Towers - New York 11th Sep 2001

The September 11 attacks, commonly referred to as 9/11, were a series of four coordinated terrorist attacks by the militant Islamist terrorist group al-Qaeda against the United States on September 11, 2001. On Tuesday morning, four commercial airliners traveling from the northeastern U.S. to California were hijacked mid-flight by 19 al-Qaeda terrorists. The hijackers were organized into three groups of five members and one group of four. Each group had one hijacker who had received flight training and took over control of the aircraft. Their explicit goal was to crash each plane into a prominent American building, causing mass casualties and partial or complete destruction of the targeted buildings. Two of the planes hit the Twin Towers of the World Trade Center in New York City, and a third hit the west side of the Pentagon in Arlington, Virginia. A fourth plane was intended to crash into a target in Washington, D.C., but instead crashed into a field near Shanksville, Pennsylvania, following a passenger revolt.