Again, local policy, not regulation. "Garrison" (by which I assume you mean "FOB") is different from "outside the wire".
It was a FOB, but the emphasis on garrison was intentional. The base had an Air Force site and O6 commander and a separate Army O6 garrison commander. I was unfortunate and assigned to the garrison. I'm not positive, but I believe the AF carried with chambered rounds. I know that my team and I had rounds chambered when we made our regular visits to the Afghan Air Force compound.
