Part II introduces us to the nuclear attack submarine and its world shattering partner, the ballistic missile boat. With more emphasis on stealth and lethality than ever before, the U.S. Submarine Force took on the Soviet Union in an undeclared war of detection and avoidance. American subs were able to track and remain undetected for weeks. American submarines were a prime factor in the containment strategy that brought the U.S.S.R. to collapse. Strategic submarines made over 3,000 deterrent patrols during the Cold War while safely and reliably controlling the nuclear weapons under their responsibility. Today, the Submarine Force enters its second century of service conducting complex operations demanding a stealthy, mobile, high-endurance platform with great firepower.