Post hurricane walmarts, humvees flanking the doors. One way in and out. Armed National Guard at the door and scattered in store, just letting in a few at a time. I've seen it more than once.
Even the little country store/gas stations had a military presence. Amazing how quickly people got used to walking past an armed guardsmen to get gas or food. Welcome to your future.
Picture was with my cell phone after Gustav at the local gas station which is in a very rural location.