I have a concealed carry license and carry daily with weekly practice at the range. With the recent spate of active shooter events, I have been trying to wrestle with what would be the best/preferred way to defend myself and someone with me if I were to find myself shopping in a Walmart when an active shooter decides to start shooting. If the shooter is not in my immediate area and there is an Exit close by, I'm exiting stage left! But what if the shooter is between me and the nearest Exit and hiding to wait for LE to arrive is not an option. How should the armed good guy engage the bad guy without getting shot by the responding police?