It missed the one with the 3 russian submarine captains armed with nuclear torpedoes during the cuban missile crisis.
http://en.wikipedia.org/wiki/Vasili_Arkhipov
This man should be hailed as a hero
I had an uncle aboard one of the USN destroyers in this incident, and he told me about it when I was growing up. He said there was some serious poker being played in this, they knew for sure there was a Soviet sub in the immediate area, and they did not know if the Soviets would fire on them or not. They formed a picket line and fired depth charges, with the idea of forcing the sub to surface or flee. They had orders to blockade Cuba from any Soviet ship, above or below the water. The standoff lasted a while, and when the sub left, it rose to periscope depth and let them see it leave. At the time, no positive ID was made on the sub, so I wonder if the info on this site came from Soviet archives. He also said he was praying as hard as he knew how, and every man on his ship was holding their breath. They were all absolutely certain that if that sub did not turn back, or if it fired on them, then it was WW-III. He didn't say anything about the depth charges being training charges, but he was very firm that they had orders that the sub was not to be allowed through to Cuba, and if it had continued on and tried to pass the picket line, they were ordered to sink it. So the charges used may have been training charges, as a warning, I don't know, but they were ready to use the real thing in a heartbeat if they had to.
Scary stuff.