Documents recently found in the National Archives cast doubt on the integrity of the 9/11 Commission’s Executive Director Philip Zelikow. In an e-mail exchange with author Philip Shenon, Zelikow claimed that he first learned of a dispute on the commission over the investigation of false statements made by NORAD and FAA officials after it had been “percolating for a while” and was not involved in the initial stages of the argument. However, an e-mail chain (scroll down) found in the Archives by History Commons contributor paxvector shows that Zelikow had been involved in the issue from very near the beginning.