Best response:
“You know, my cousin used to work in the Security field, and he always said the most important asset is that NOBODY knows your defense.”
“So Doc, you’re in good company!”
Better response: "Did you know that according to the National Institute of health/Center for Disease Control, medical malpractice kills 110,000 people per year in the United States. That's eleven times the number of people who die each year from firearms. Seems to me that from a statistical standpoint, firearms are safer than doctors."