I live in a relatively safe area, but one potential scenario keeps bugging me because I'm unsure what I should do in the situation. I have carry permit.
Scenario: I'm in a fast food joint with the family. BG walks in, brandishing a gun at the cashier(s) demanding money (does not verbally threaten to shoot cashier). His back is to me and most other patrons. Patrons all dive for cover. Let's assume he thinks patrons are not a threat, and he's focused on getting money and running.
Am I within my rights to shoot him?
(variation A) What if he DOES verbally threaten to shoot cashier?
(variation B) What if he swings gun around toward patrons to threaten (but does not directly verbally threaten to shoot)?
In any of these cases, does it make a difference if he is shot in the back?
Replies greatly appreciated, as I think this may be the most likely scenario I'd ever see.