The Pentagon's Brain

in the event of a Soviet nuclear attack, there was a fully formed plan in place to keep the president and his cabinet alive. An executive branch version of the Station 70 bunker had recently been completed six miles north of Camp David, just over the Pennsylvania state line. This underground command center, called the Raven Rock Mountain Complex, was buried inside a mountain of granite, giving the president protection equivalent to that of walls a thousand feet thick. The Raven Rock complex, also called Site R, had been designed to withstand a direct hit from a 15-megaton bomb.