Richard Clarke, the chair of the White House’s Counterterrorism Security Group, updates the US Continuity of Government (COG) program. National Security Adviser Sandy Berger has become aware that terrorism and domestic preparedness are now major issues. He suggests the idea of a “national coordinator” for counterterrorism, and that this post should be codified by a new Presidential Decision Directive (PDD). Clarke therefore drafts three new directives. The third, tentatively titled “PDD-Z,” updates the COG program. [Clarke, 2004, pp. 166-167] This program, which dates back to the cold war, was originally designed to ensure the US government would continue to function in the event of a nuclear war with the Soviet Union. [Atlantic Monthly, 3/2004] Clarke will later say it “had been allowed to fall apart when the threat of a Soviet nuclear attack had gone away.” [Clarke, 2004, pp. 167] He will explain: “We thought that individual buildings in Washington, and indeed perhaps all of Washington, could still come under attack, only it might not be from the former Soviet Union.… It might be with a terrorist walking a weapon into our city.” [CBS, 9/11/2001] Therefore, “If terrorists could attack Washington, particularly with weapons of mass destruction, we needed to have a robust system of command and control, with plans to devolve authority and capabilities to officials outside Washington.” [Clarke, 2004, pp. 167] President Clinton will sign “PDD-Z” on October 21, 1998, as PDD-67, “Enduring Constitutional Government and Continuity of Government Operations” (see October 21, 1998). The two other directives drafted by Clarke will become PDD-62 (see May 22, 1998) and PDD-63. [Clarke, 2004, pp. 170; Washington Post, 6/4/2006] By February 1999, according to the New York Times, Clarke will have written at least four classified presidential directives on terrorism, which “expand the government’s counterterrorism cadres into the $11 billion-a-year enterprise he now coordinates.” [New York Times, 2/1/1999] Clarke is a regular participant in secret COG exercises (see (1984-2004)), and will activate the COG plan for the first time on the day of 9/11 (see (Between 9:45 a.m. and 9:56 a.m.) September 11, 2001).