Question: Which survivor of the mass shooting that took place on October 16, 1991, at a Luby's restaurant in Killeen, Texas, United States became a leading advocate of an individual's right to carry a concealed weapon?
Sentence (from "Luby's shooting"): The perpetrator, George Hennard, drove his pickup truck through the front window of the restaurant, and immediately shot and killed 23 people, and wounded 27 others before fatally shooting himself.
Relevant evidence: No