Maybe it's a rockape / support helicopter thing ...
Not that I'm aware of on the SH units I have served at. In fact, the only naked bar I have ever seen was, I'm afraid to say, at a Tornado unit whilst I was holding - I thought it was great. To a woman, none of the females were interested, which meant that the one or 2 of us that didn't want to strip off with the rest left the old and fat to get on with whatever it was they did with the peanuts whilst we spent a rather pleasant night with the girls.