Temperament matters.

Especially when nuclear weapons are involved and you don’t—you can’t—know what the enemy is up to, and you’re scared. Then it helps (it helps a lot) to be calm.

The world owes an enormous debt to a quiet, steady Russian naval officer who probably saved my life. And yours. And everyone you know. Even those of you who weren’t yet born. I want to tell his story…

It’s October 1962, the height of the Cuban missile crisis, and there’s a Soviet submarine in the Caribbean that’s been spotted by the American Navy. President Kennedy has blockaded Cuba. No sea traffic is permitted through.

The sub is hiding in the ocean, and the Americans are dropping depth charges left and right of the