Saw this on the news the other night.
2 BG in a car on I40 indicated to a woman that she had a low tire. She pulled over to investigate, and one of the men approached and threatened her with a knife.
She pulled her gun (legal CCL holder), and the BG fled with buddy. No arrests.
I was able to point this out to my non gun family as a time when CCL is the only thing that could have prevented this from being a VERY ugly situation.
My only question-as I asked my wife- if he's threatening you with a knife-deadly force. I wouldn't have thought about it, I'd have drawn and shot him.
All the best