It’s building...can be seen when the military are on patrol while the woman was outside the wire...if one was watching the scenery closely, it can be seen that any who were considered a “threat to security”, regardless of infection status, were dealt with by extreme prejudice.
Maddy took a lot of heat for not picking up that handgun. My argument was that if she were caught outside the wire with a firearm, she'd have been shot on the spot. A pistol certainly didn't protect its previous owner.
As a gun owner, this is something we'd need to consider in a SHTF situation; when possessing a weapon will get you killed. There's be times to carry, and times to stash them away.