The coup of September 11, 2001 - a series of four terrorist attacks carried out on Tuesday morning, September 11, 2001 in the United States using aircraft abducted. Made him 19 hijackers who bought 4 tickets for domestic flights of U.S. airlines. After taking control of aircraft sent them to the known objects in the U.S.. Officially it is assumed that the towers were collapsing as a result of breach of the steel superstructure of buildings, partly due to the impact of aircraft, and then, as a result of intense fires initiated by the exploding jet fuel. The attack killed about 3,000 people.