I've had one crackhead try to take my gun off me at a Kum & Go while I was putting gas in the company car. I had to go in and get the receipt.I spent many nights staking out stop & robs. It was like fishing, be patient and an armed robber will show up.
I had one Crackhead attack me in a 7-Eleven while I was getting another receipt.
After that I went to the edge of town for gas.
For a while there was a trend of armed robberies where they'd start at one end of a street and rob every convenience store on the street for a couple of miles.
It might still be happening but I'm not working nights and listening to the scanner anymore.