The Russians take a different approach. They have shelter space in Moscow and St. Petersburg for every citizen of those cities in deep subway tunnels with blast doors and propositioned supplies. This says something about which country values it’s citizens now doesn’t it.
Check out the size of this door that’s at least a 500psi door which means effectively a direct hit wouldn’t bust it open .
https://www.reddit.com/r/TrainPorn/comments/ku30e9/blast_door_in_st_petersburg_metro/
I actually worked inside NCMC (NOTAD Cheyenne Mountain Complex) in the early 70s. They have blast doors inside that granite mountain that are just as strong. TWO of them, in fact, with a space between to move a bus in to enter the open-close-open-close sequence. We actually had to ride a bus from the outer turnstiles where wallet badges were exchanged for interior badges to even get to the inner doors.
We were all told that when the complex was built when Russian missile targeting wasn’t that accurate and that at least 15-30 minutes of survivability was all that was needed to use the ring-and-spoke C&C system to direct a nuclear response. Offutt AFB (B-52s), multiple outer ‘spoke’ sites with missiles, etc. and the like. None of us who would be caught inside when it hit expected to do anything but maybe survive for 30 days or so. Today? Targeting would demolish the entire complex in one hit, IMO.
The ONE thing that Russians had/have going for it for its citizens is that US targeting normally wouldn’t be targeting mass population centers (but, with Democrats in control I’m not so confident of that now).
About all I can say is that the command structure of this country now is replete with nothing but scum looking out for themselves.
Looks like the tracks now interfere with the door closing.
Much of our planned targets were changed in 1992-98.
They went from the population centers to industrial operations, military bases and above all, command centers and hidey holes the big wigs would go hide out in.
Now all those places were legitimate targets before then, but population centers themselves were delisted, unless they were also associated with big factories and works.
The idea is, their people will survive, but not their masters. Nuclear decapitation.