Inside 9/11 is a three-part television documentary film produced by Towers Productions that premiered on August 21 and August 22, 2005, on the National Geographic Channel. The program covers the September 11, 2001 attack, the events that led to it, and its aftermath. The first part consisted of examining, event by event, the build-up towards September 11. The second part consisted of the events of 9/11 itself and the aftermath. Experts and eyewitnesses provide their accounts of the attacks, and the events are covered in chronological order.