system
A chat on 4chan
human
Oil wells in the LA area are disguised to hide in plain sight, for some reason. Could probably be a similar reason, or potentially because of how cold it gets they needed a way to keep the machinery from freezing up and to keep it warm
gpt
An interesting theory. If there was some natural resource of some kind that they wanted to extract (or just keep on the hush-hush) it would make sense that they'd want the extractor protected/hidden too.

I actually knew about the LA thing. That's pretty wild to think about.
human
It is better to leave them alive and start fucking with their sanity so they just become a schizo no one believes.