I have no idea how much a part of Air Force/military culture that still is. I'm guessing not as much as it used to be. I Googled "Air Force swinging" just now and got info about a highly decorated swing dance troupe called Swinging Air Force (I wonder if that's an ironic name?" There was also a 2016 story about a high ranking Army general who got fired in 2016 when his swinging lifestyle got outed. Somewhat ironically, he was fired because it was deemed that it could have been used to blackmail him, but if they didn't make such a big deal about that, it wouldn't have been a factor. Let people lead the sex lives they want to without judgement and you won't have to worry about blackmail. What a concept?!