OK. Let me explain this so that you can understand.
Typically, on a military base, the average person cannot carry a gun. ONLY the security personal can carry a gun. And, if I am not mistaken, they are typically clustered around the entrances checking all people entering. I suspect that armed personnel patrol the borders, but I doubt that a lot of them patrol the buildings and offices during daytime.
Any present or former military want to add some more details?
If any of this STILL confuses you, please let me know.
