September 11, 2001 the most tragic terrorist attack happened, killing nearly 3,000 people. This is the story of how 9/11 became history. On September 11, 2001 the twin towers were put under attack by hijackers, which then became the biggest terrorist attack to ever happen. A total of 2,996 people died that terrifying day. The first plane to hit the buildings was at 8:46 am. Brian Clark, one out of the 18 survivors escaped from his office on the 84th floor. 9/11 was a heartbreaking and traumatizing day for many. A day that will never be forgotten and will be remembered forever. Every year since, 9/11 has been honored and continues on to be.