my fiancee and I had just left a carnival and I went to stop at Walmart because I needed a restroom. There was a young large male near the entrance... my Fiancee on my arm and my G19 at 4:00 O'clock (police at the carnival had G17s :D). as we enter the first sliding door the guy waiting at the door followed right behind me (I could see his reflection he was right behind us looking at us)
I doubled my pace speed and as I entered the Walmart he stopped, turned and went back outside 0.o...I thought this was weird. Could have been completely harmless but can never be too careful.