The military encouraged that.
I started every shift of my military kitchen service with 3 each 25 gallon pots of water that got heated to as close to 210F as altitude allowed.
Just in case power went out and I needed it. It was also darned handy for other uses.
One of the problems some folks don't realize is that the good old US of A is becoming 3rd world in some respects. We've got the 3rd worlders here. Facilities aren't as good as they were in the 70s/80s, and things like bedbugs and lice are on the rise right here in the US of A.
/johnny
I have a 30 gallon stainless steel pot I got at WalMart for exactly that reason/use. Going through the line with it, the guy ahead of me says “That’s the biggest pot I ever saw!”
Never had to use it yet, but I got it if I need it.
And you know, of course, that the addition of a small amount of plain salt will raise the BP of water by a few degrees.
Doesn’t matter much at or near sea level, but for people in the Rockies or high desert areas, it’s good to know.