They said the detonation would have really changed things. I wonder how it would have really changed the world?
Not so much the immediate deaths and fall out that would have followed, but the danger that the pilot didn't get a message that his plane was crashing out in time.
If the USA suddenly had an unexplained H Bomb go off in Carolina they might have assumed it was a Soviet ICBM and launched a counter attack against Russia, who would strike back at the US.
It would have been all over in a few hours and we wouldn't be having this conversation.
Maybe some folk in New Zealand might have survived, but I wouldn't rate the rest of the world's chances.