https://www.denverpost.com/2019/02/28/denver-airport-talking-gargoyle-anniversary/
It can be done in Florida anon.
https://www.news-press.com/story/life/2014/11/02/living-southwest-florida-bomb-shelter/18323555/
https://photos.orlandoweekly.com/inside-the-forgotten-mount-dora-catacombs-the-nations-largest-subterranean-bomb-shelter/?slide=1&y12s3gb
https://www.tampabay.com/news/perspective/perspective-the-ghosts-of-race-and-bomb-shelters-in-florida/2334934
https://nationalinterest.org/blog/the-buzz/jfk-had-super-secret-nuclear-war-bunker-florida-21406