I expect that there should be laws that any owner of a trailer park, camp ground etc. should have probably several storm shelters for people to go to. It is horrific and stupid when they are not forced to or do it voluntarily. And it is not like they have to drill through bedrock in some of these places...but fortunate if they do because then chip out the rock and make shelters and houses out of them. And places where there is great poverty often have an abundance of rock...some of it quite usable for construction...ship the rock to where fragile homes are being constructed and build stronger, perhaps smaller ones. Teach masonry in high schools so that there is no excuse for some of this ignorance..oh we can't quit building with wood because no one knows how to build with stones any more..or cement or whatever..oh the Chinese use up all the cement...figure out what the Chinese do and then do it here.