September 11, 2001. Following the nightmare, the world was never be the same again. 19 Al Qaeda terrorists hijacked four planes and carried out massive suicide attacks against targets in the US.At 8.45 a.m. a Boeing 767 crashed into the north tower of the World Trade Center.During the early stages of the evacuation of the tower, most New Yorkers thought this was a tragic accident. But 18 minutes later, the reality became clear. A second plane sliced into the south tower. America was under attack.