“In late August [23, 2001], the [potential terrorist Zacarias] Moussaoui arrest was briefed to the DCI [Director of Central Intelligence, George Tenet] and other top CIA officials under the heading ‘Islamic Extremist Learns to Fly.’ Because the [Counterterrorist Center] system was not tuned to comprehend the potential significance of this information, the news had no effect on warning.”
– 9/11 Commission, The 9/11 Commission Report, Page 347