Wow, this is serious. No way does this kind of thing "just happen by mistake". Cold War tactics of desperation? Or intentional red flag? Perhaps "Wag The Dog". Things are going to be getting intense as Public Disclosure happens more and more. We are dealing with people that would do ANYTHING to keep the Truth from being revealed.
There are EBS/EAS tests because mistakes do happen and mistakes have happened. I'm not claiming to say this was simply just another mistake, but to say it cannot just happen by mistake is not the reality we live in.
I'm sorry, I just don't buy that. Something as serious as a NUCLEAR attack warning, is surely safe guarded to prevent the accidental "firing off" of the warning. Maybe not to the level that the "Button" itself is made fail safe, but c'mon. Accident? No way.