North Korea is the biggest threat looming over the world, with Kim Jong Un sitting on a cache of nuclear missiles aimed at the USA and its allies. The most powerful nation in the world is ready with a counter plan if 'Mad' Kim decides to launch its nuclear missiles. For US the most important function would be protect its biggest asset , The President and other members of the government and also members of the congress. The idea behind this drill is to keep a functioning government which can keep taking important decisions. Watch Video to know more about US's counter plan.