A few times, when I worked in armed security. Very exciting at first, then later unnerving. I learned from those experiences just how fast things can go to heck, and how well and fast I can react to a threat. Luckily I never had to shoot but there were times I had a good press on the trigger. There are a few people walking around today only because of a pound of pressure and a fraction of an inch, and in a couple cases because I went hands on and neutralized the threat. It's true what's said, there are no rules in a fight for your life.
"Each worker carried his sword strapped to his side." Nehemiah 4:18
Guns Save Lives. Paramedics Save Lives. But...
Paramedics With Guns Scare People!