i have a very good childhood friend who was in the marines, then spent a couple decades in and out of prison, and now works at rikers island (a huge jail in nyc, where ). i would totally hang with him when i see him! even if he can't get high with me anymore.
come to think of it, at least a half dozen of my bros from back then joined the military, and i've hung with several of them since. the only thing any of us really have in common now is our history, but that's more than enough to enjoy some time together.