Let me look at this from my point of view, and my life style.
In the last 4 weeks, I have had breakfast twice in Waffle House Caf's, both times with my Wife. I am always armed, Glock 19, I spent 23 years as a firearms Instructor, I am a fair shot.
Seeing that young guy with a pistol in his hand, me sat with my Wife? I would have stood to get the best angle, and shot the guy with the gun, all he would have had have done to have shot my Wife, twisted his wrist, pulled the trigger! No chance I was going to give him that opportunity.
On my own, mayhap, I would have done this differently. As in drop the gun?
Putting my Wifes life in jeopardy? No way! This is not to stop a robbery, could care less about the money, but my Wife? I care a lot.