September 11, 2001. -19 al Qaeda members hijack four fuel loaded commercial airlines bound for the west coast. 2,753 people are killed when American Airlines Flight 11 and United Airlines Flight 175 are crashed in to the north and south World Trade Center towers. 184 killed when American Airlines Flight 77 crashes into the Pentagon. Near Shanksville, Pennsylvania, 40 killed when United Airlines Flight 93 crashes into a field after passengers and crew attempt to retake control of the plane.