That sounds right: > Incredible as it may sound to a civilian, Hicks said he spent no time worrying about the thermonuclear warhead. He had been convinced by h

That sounds right: > Incredible as it may sound to a civilian, Hicks said he spent no time worrying about the thermonuclear warhead. He had been convinced by his training that it was nearly impossible to detonate a warhead accidentally. Among other things, he said, the warhead had to receive codes from the launch-control officers, had to reach a certain altitude, and had to detect a certain amount of acceleration and G-force. There were so many safeguards built in, Hicks later joked, that a warhead might have been lucky to detonate even when it was supposed to.