During Rita, had the opportunity to do a bit of shopping at the local Walmart after it had reopened. Walmart had armed guards at the store and we had to enter through a side door. When finished with our shopping, we went out the front door as long lines of others waiting were told that there was nothing left to buy in the store.
The looks we got while wheeling our buggies to our vehicles was pretty unnerving - good thing the guards where there!