Remember that Henderson Nevada zipcode from an old Q drop. It led to a Henderson company that does the prep work for underground data centers up to power and utilities. Nobody really followed that up.
If you wanted to build a bunker in that part of Nevada, you would need the services of a company like that. You might even pay for it out of a government budget so as not to waste your own cash.
Or, if you were building a new highrise or office building, and you wanted a self-contained data center built underneath the site before the main building went up, again that Henderson company could do the work.
In fact, if the cabal trust them to build bunkers, they might even work on projects out of state. There is need for digging there.