In “The Substitution for the Testimony of John” entered into the evidence in the Moussaoui trial on March 11, 2006, “John” is Tom Wilshire, former Deputy Chief of the CIA bin Laden unit, who was reassigned in mid-May 2001, to be liaison to Michael Rolince, Head of the FBI ITOS unit. This evidence item shows that the CIA knew in July 2001, that Mihdhar, and by association Hazmi, ( the terrorists aboard AA 77 which hit the Pentagon,) were going to take part in the next big al Qaeda operation. This same document shows that Wilshire was told on August 22, 2001, by FBI IOS Agent Margaret Gillespie, that Mihdhar and Hazmi were inside of the US. Wilshire and the CIA knew immediately at this point that both al Qaeda terrorists Mihdhar and Hazmi were inside of the US in order to take part in the huge al Qaeda attack which the CIA had been warned about since April 2001, an attack they were told would kill thousands of Americans.
Verifying documentation: The Substitution for the Testimony of John
See the book "Prior Knowledge of 9/11" for more in depth information on this.