Item #388293 of things that would never happen in America.
During the Cold War, even the Soviet Union had better missile defense and civil defense infrastructure than the US.
During the Cold War, even the Soviet Union had better missile defense and civil defense infrastructure than the US.
Civil Defense was taken seriously in the US for a while (I was trained as a radiological monitor in high school) but fatalism and optimism took over. Countries like Switzerland made changes to their national building code requiring all homes and larger buildings to have shelters. IMO the US should have standardized shelter plans as an optional part of our building code, so if someone wants one, there's a proven design available.
With regard to Denmark, look to the Mormon Church. They have a mandate (not always followed!) to keep a years supply of food in the house. So the church has distribution warehouses and publishes information about long-term storage.
https://www.churchofjesuschrist.org/topics/food-storage/long...
I've been involved in several different cities emergency preparedness plans though, and there is actually a lot more happening in the US than most people think or know. It rarely if ever makes the news, but it happens.