[AAshooter]

Several thoughts come to mind as far as getting involved.

First, I would be trying to decide if I was about to witness a robbery or a shooting/murder. What was the bad guy's intent and if he was likely to shoot? I am not sure preventing a $300 robbery is worth a $25,000 lawsuit. The victory of right over wrong is sometimes too costly.

Second, could I exit the scene to safety? The reason I carry a firearm is for the defense of my life and those of my loved ones. I don't need to be the white knight. I don't need to risk my life and ruining the lives of my family if I should get shot, disabled or killed to defend someone who has chosen not to defend themselves. This point could be state more eloquently; however, I think you get the point. I am neither legally or morally required to step in without fully considering the risks.

Third, are you absolutely sure that the bad guy was acting alone? Are you sure that none of the other patrons in the store were working with him? Multiple gunman make the situation complex.