9/11 Attack Video: 5 Minutes of Horror

First plane crashes into North Tower (0:00) Second plane crashes into South Tower (1:00) South Tower collapses (2:25) North Tower collapses (3:28) The September 11 attacks (9/11) - a series of four coordinated terrorist attacks on the morning of September 11, 2001. The attacks killed 2,996 people and injured over 6,000 others. Four passenger airliners were hijacked by 19 terrorists. Two of the planes, American Airlines Flight 11 and United Airlines Flight 175, were crashed into the North and South towers,