If you are writing about incidents where the mere presence of a defensive weapon was sufficient to diffuse a situation, there have been quite a few articles here on FR over the years.
No, I’m referring to a man or woman who made a decision NOT to display and/or use their weapon.
It’s a very personal decision and not one I’d blindly label the act as cowardice, but it’s one also fraught with nearly as much liability as those who did act and whose anonymity may or may not have been protected by patrons.