I have always thought about this. I mean, who doesn't? Now that the US and NK are having issues along with Russia and other neighboring countries, seems like such thing is inevitable. It's not that only those two countries will be bombing each other. For sure their allies will step into action thus making things more complicated. Now that North Korea "vows to obliterate ‘war-thirsty’ America if Trump launches military strike against Kim Jong-un", things will about to HTF sooner or later. (I know we don't want that to happen of course.) All countries are preparing for such disastrous event if it ever comes. But how about us normal people? We are not even prepared for it and we never will because of the intensity and devastating damage it may cause to us.