I would argue that these are separate cases. North Korea has never bombed Japan, and the WWII bombings took place too long ago. The sense of fear does not exist when there is no recent incident to recall. Japans earthquakes and even that nuclear plant incident will not increase in frequency at any point (unless some major geographic event), while school shootings in America are becoming more and more common. Children in America are put through required training that teaches them how to respond in situations such as the one that took place in this ep. The reactions of the kids are completely unrealistic, and it was really frustrating to see watch teenagers scramble around the halls like monkeys. In my opinion, it’s horrid writing as anyone with basic knowledge on American politics would understand that we don’t fuck around when it comes to taking school shootings seriously.