If the unthinkable were to happen in the united states like an Atom bomb hitting us, should not flee but get into a stable building and stay there until officials say its safe. The advice is based on recent scientific analysis showing that a nuclear attack is much more survivable if you immediately shield yourself from the lethal radiation that follows a blast. Officials say we are moving aggressively to conduct drills, prepare communication guides and raise awareness among emergency planners of how to educate the public.