Colossus

The President of the United States gave the activation order--and the defense of the entire free world was given over to a machine. This was COLOSSUS, the super computer, the size of a large town, buried somewhere in the Rocky Mountains, the sole arbiter of war and peace. Colossus was the ultimate computer, built to defend the free world but the russians had developed a similar machine the guardian. Both machines develop free will and decide to make some changes to the existing order.