Old School Bunkers
Wayne isn't the only one with a DIY underground bunker. During wartime in the US, the government suggested that citizens make their bomb shelters in case of a threat. Their only tips were to use a lot of concrete and have a strong roof. Wayne proved that it's a bit more complicated than that...
Businiess is Booming
Naturally, there are actual companies that create underground bunkers for clients. All of these businesses saw a boom in their economic growth in 2017 when Americans began preparing for war-time situations. Foreign tensions were growing, and Americans knew exactly where to turn.