Read these if you like Stories Where, In A Life-or-death Situation, A Character Becomes Obsessed With A Simple Game, Instead
Listing 1 story.
Two men have been locked underground somewhere in Utah, Montana, or Idaho with instructions to wait for a monitor's signal then each turn a key in a lock simultaneously to fire a "bird" at an unknown target city. They also have guns and instructions to shoot the other if the other behaves strangely.