Later work relating to 9/11 attacks
On August 15, 2006, Kean and Commission Vice Chair Lee H. Hamilton released a book, Without Precedent: The Inside Story of the 9/11 Commission, published by Alfred A. Knopf. In the book, Kean and Hamilton write that the 9/11 Commission was so frustrated with repeated misstatements by The Pentagon and Federal Aviation Administration that it considered an investigation into possible deception by these government bodies concerning their response to the attacks.
Kean served as a paid consultant and spokesman for the ABC miniseries The Path to 9/11, which aired nationally in primetime in two segments, on September 10 and 11, 2006. The second part of the miniseries also aired without commercial interruption with the exception of a 20-minute break at 9 pm ET, when President Bush addressed the nation on the fifth anniversary of the September 11 attacks. While not technically considered a documentary by ABC, the series drew criticism prior to its airing for misrepresenting facts leading up the September 11 attacks. Bill Clinton, Madeleine Albright, many former high-ranking Clinton administration officials, and other scholars, publicly questioned the accuracy of the miniseries and asked that it not be aired. Albright called the miniseries' portrayal of her "false and defamatory." Former U.S. ambassador to Yemen Barbara Bodine also strongly criticized her own portrayal, complaining in the Los Angeles Times about the "mythmakers" who created it and calling the project "false."
On July 4, 2007, al-Qaeda publicly released a video of Ayman al-Zawahri, its deputy chief, urging all Muslims to unite in a holy war against the United States in Iraq and elsewhere. The 95-minute video also prominently featured video excerpts of Kean citing al-Qaeda as one of the most formidable security threats that the U.S. had ever confronted, presumably cited with the intention of bolstering the morale of al-Qaeda supporters. Comments by Kean cited on the video include a reference to the fact that al-Qaeda remained as strong in 2007 as it was before the September 11, 2001, attacks. The video also appeared to validate that al-Qaeda was closely monitoring U.S. political developments, especially including the work of the commission. It also suggested that al-Qaeda intended to focus not just on engaging the West in Iraq, but also in other countries. "As for the second half of the long-term plan," al-Zawahri says on the video, "it consists of hurrying to the fields of Jihad like Afghanistan, Iraq, and Somalia for Jihadi preparation and training".
The commission reassembled in Washington, D.C., on July 22, 2014, for the tenth anniversary of the issuance of its report. It assessed how well the government was performing given in addressing terrorist threats and to meeting the commission's recommendations for preventing a future attack.