one rusty pickup truck with a plow mount and a bed full of old crystallized dynamite has a very good chance of taking down any nuclear facility. if they can smash the first chain-link fence, chances are very high they'll git 'r dun.
a night watchman rattling doors is not going to stop them. even if he's at the video guard desk, he can't.
and the whole security chain knows this. just saying...
That's stretching the definition of "accident" more than somewhat.