I’m not really clear on how much usable space there is inside. Based on the construction photos and diagrams; it is pretty massively constructed and originally had a lot of radar components and supporting hardware, the actual missile silos were elsewhere.
Best case, when they decommissioned it they removed most of that stuff, leaving you with a ludicrously overbuilt but sturdy chunk of warehouse space; less optimal case the place is still a warren of rooms(in nuke resistant concrete, not ‘remodel to suit’ spit and drywall) and all the junk that wasn’t deemed classified and wasn’t worth moving(wouldn’t be a huge surprise if a high power '70s electrical system has some hideous PCB-riddled transformers stashed away somewhere).
For all the article’s tales of spelunking adventure, it didn’t shed too much light on the present-day interior; and most of its external shots are the time-of-construction LOC images.
