I've been reading "Red Star Rogue" - a history of a Soviet sub that apparently tried to launch a nuclear warhead at Pearl Harbor in 1968. It's an amazing book - I'll have to look for other information on this incident after I finish it. The context of the times is interesting as well - as this rogue strike was being attempted, you also had the Pueblo incident and the Tet Offensive in Vietnam. In other words, lots of bad things happening all at once. Kind of amazing to me to consider just how close things got to global war when I hadn't even reached the age of 7...