On: Ask HN: I'm writing a book about white-collar drug...

[Eilene]

If I sound like an idiot, forgive me, but you mean, literally, contractors that have to physically climb towers, right?

[walrus01 → Eilene]

Yes, the people who do the physical installation and maintenance of antennas and lighting on cellular towers, for the most part. Also repair/maintenance for mobile radio systems (public safety), AM/FM radio, etc.