Personally this doesn’t seem that creepy to me. It’s potentially practical advice for the world we live in today. It doesn’t hurt to know ahead of time what to do when the alarm sounds, since you won’t have to read the instructions during the attack.
If you are talking about North Korean attacks there’s a decent chance you would survive the attack if you took the right precautions both during and after the attack.
Personally I don’t think Kim is likely to launch missiles. This sort of saber rattling always happens when they have a bad crop yield. Still, it only takes a few minutes to know what to do in the event of an emergency. Why leave yourself ignorant?
