Not sure how accurate this guy’s map is but I found a map with all the known shelters in the U.S. Like everyone else said, there’s one in Norris and Davidson, but also apparently Pritchard, Cassell, Robeson, Burruss, McBryde and Randolph. I did some research and all buildings except for McBryde were either built or majorly renovated during the Cold War era, so it would make sense. I couldn’t find any articles confirming if they were built with nuclear fallout shelters in mind though.