The 9-11 Commission Report by U.S. Government
The 9/11 Commission Report, formally titled Final Report of the National Commission on Terrorist Attacks Upon the United States, is the official report of the events leading up to the September 11, 2001 attacks. It was prepared by the National Commission on Terrorist Attacks Upon the United States (informally sometimes known as the "9/11 Commission") at the request of the President and Congress.
The Commission’s Final Report provides a full and complete account of the circumstances surrounding the September 11th, 2001, terrorist attacks, including preparedness for and the immediate response to the attacks. It also includes recommendations designed to guard against future attacks.