Just like weaves Be Flyin' at the waffle house, but not your local higher priced restaurants. And as Paul Harvey would say "That, is the rest of the story".
I recall one shooting a guy started shooting people and a good guy in the check out line drew his CCW to stop him. The woman behind him shot him in the back and he died. Turns out, the girl in line behind him was the shooters girlfriend who was pretending to be a shopper while watching out for her boyfriend the active shooter. I avoid walmarts and waffle houses for this reason. If I do go, I am automatically in condition orange.