" According to James Mann's Rise of the Vulcans, once a year in the 1980s, the Reagan administration flew Cheney to a secret bunker to practice rebuilding the government if the Soviets destroyed Washington. Cheney's role, Mann reported, was to use his White House chief of staff experience to run the government in the name of any surviving cabinet member who made it to the bunker. The Reagan plan ignored the Presidential Succession Act, a 1947 law that put two top congressional leaders higher in the line of succession than cabinet secretaries. The program also made no plan for reconstituting Congress, because "it would be easier to operate without them," a participant told Mann. "

― Charlie Savage , Takeover: The Return of the Imperial Presidency and the Subversion of American Democracy