Gun control laws didn’t stop the Maryland school shooter – a good guy with a gun did.
If you are going to carry a concealed firearm to defend yourself, don’t half ass it. Train train train. Don’t risk escalating the situation if you do not have the skills to quickly and decisively end the conflict.
When an encounter, be it officer arresting someone for a non-violent crime, or citizen simply walking down a street, it is important to be mentally ready to instantly defend against a lethal force threat.