I work inside of these plants, but only just barely. I'm not turning wrenches and cutting pipes and stuff; instead,.I work on the back ends of their radio systems.

I just drive over to the radio shanty near the tower, park, and walk inside to poke at a computer or move a wire or whatever.

A friend of mine does work on the corpo AV systems for some of these same places. This doesn't ever put him inside the plant; he's always separated from it by a magical chain-link fence.

He was rather surprised when I told him how arduous the drug testing was, as he was never required to do anything like that (and wouldn't stand a chance at passing if he were).