There were a great many other close calls. Rarely did it boil down to one person, but all sorts of things brought us dangerously close. And those are only the ones we know about. Who knows what mistakes have never been made public.

https://www.bbc.com/future/article/20200807-the-nuclear-mist...

>>As it happens, on this occasion there was no imposter – at least, not a human one. The figure skulking around the fence is thought to have been a large black bear. It was all a mistake. But back at Volk Field, the squadron was still unaware of this fact. They had been told there would be no practice runs, and as they boarded their planes, they were entirely convinced that this was it –World War Three had begun.