I don’t believe his son was injured in the rampage at the movie theater but his son’s girlfriend was. From the Marietta Daily Journal (GA):

Bennett, speaking to a panel discussion of eight current, outgoing and future Republican state representatives and senators at the Cobb GOP’s Legislative Breakfast, said his son had a concealed handgun license in Colorado, but wasn’t allowed to take his gun into the movie theater.

“We need to abolish the defenseless victim zones,” said Bennett, who recently moved to the area from Colorado. “I’m tired of explaining to him why his girlfriend was shot and he could not defend himself — a God-given right.”

More at the link.