I guess he forgot he was in Texas

"Good Samaritan" kills "Active Shooter" in Texas Sports Bar

Forty-eight year old James Jones walked into Zona Caliente Sports Bar and started screaming. When manager Cesar Perez tried to calm Mr. Jones, Perez was murdered in cold blood for his trouble. Upon witnessing this, an armed patron inside the bar instructed his wife take cover. The patron, who wished to remain anonymous, stood and shot Jones in the back. James was killed, but not before he fired several rounds. 

                                                                                                                                        Story here