Enter The Exit: DEFCON Soviet

The world is in the middle of the cold war and the United States armed forces entered a state of maximum alert, “DEFCON 1”, for the first time in its history given suspicions of an imminent nuclear attack by the Soviet Union. You are the Alpha team of the American armed forces and in your hands is the most important secret mission of your lives and on which the lives of thousands of innocent people depend. 
First they must manage to infiltrate the Soviet command center hidden in a military office in Leningrad. And then find a way to identify and disable the missile that is believed to hit Washington in 60 minutes. If we fail, the Third World War will undoubtedly break out, destroying the world as we know it.