"Against a morning sky, a mushroom cloud spirals heavenward. A nuclear bomb has detonated in the heart of Washington D.C., incinerating 15,000 residents in just 15 seconds. More than 50% of the population living within a 1/2 mile radius of the explosion is either dead or severely injured. The next 24 hours will determine whether the rest of the city lives or dies. To survive this horrific ordeal they will need a plan. And lucky for us--there is one. But will it work? For the first time on television, the Department of Homeland Security reveals the most detailed and comprehensive plan to save America should terrorists go nuclear. This chilling two-hour special delves into the complex and highly secretive world of disaster planning." -- History website.