Okay, so, for one of my capstones back in college (Yes, i have a degree in game writing, among other things) I did a design Bible for my vision for a Fallout game called Fallout: Great Midwest
One of the factions was the Union of Atomic Workers local 158, who've basically been keeping the majority of southeast Wisconsin up and running with power, clean water and working industry
Just a bunch of blue collar Joe's who watch out for each other and keep everything running

crashed in San Fran after the war and used the nuclear reactor and AI computer from their sub to build a nation in the ruins. 200 years later they're a high-tech powerhouse. They're also a kinda racist "what if Shaw Brother's Kung Fu movies were real and also plasma guns"?