Yet another TV cowboy shares his fantases. Reality is another matter entirely. The Texas church neighbor didn't "return fire", he shot the killer as he was leaving the scene. Unlike all those movies and shows, Hopkins' imaginary Walmart good guy with a gun would have made the investigation longer and more complicated rather than simplifying it. The customers who drew but did not fire were the "competent, trained concealed-carry permitted citizen" types, and Hopkins' imaginary hero would have faced a good chance of getting shot by one of those customers and/or being arrested. There is no simple and easy resolution of all the issues before the theme music plays and the credits roll.