So, was the man "on duty" when he re-entered the store with his gun? Or, was he a private citizen because he had left the premises and should no longer be considered as "on duty"? So, a lawyer could argue that he "fled" the store and therefore technically no longer was an employee on duty at that point. His return was not as an employee, but as a private armed citizen who broke up an armed robbery attempt and saved the life (perhaps) of a fellow citizen. If Autozone has a lick of sense, they would re-evaluate this case and declare that since he fled the store, he no longer was considered an employee on duty and their ZT policy no longer applied as he was not re-entering the store to perform the company's work. Autozone has an opportunity to do the right thing here. Then again, they could be like TAB and say TS.