Funny thing, working at both CBP as well as an AF Reserve HH-60 unit.
Majority of -60 pilots at CBP are former Army, primarily WOs, with a few RLOs.
When I'm crewing with them, I help with the preflight, etc, as much as I can when they're preflighting the bird; generally one guy takes the roof and the main rotor system, while the other does the walkaround.
Over at my AF unit, I inquired to one of the pilots a question that I'd thought of regards the cannon plug connections for the tailrotor deice system. He looked at me dumbfounded and told me he didn't know, since he'd never been up the tailboom/tailboom steps before. In the AF apparently, the Flight Engineer on the HH-60 preflights, and the best way to piss one of them off as a pilot, is to do a preflight on the bird they're assigned to. Pilots in the AF just do a quick "kick the tires" walkaround.
Interesting differences between pilots of the same aircraft, who are just from different services.