He thought he had told her about this, but maybe he hadn't...
"I was kicked off of the police force for firing my gun when I shouldn't have. I recieved a call that this kid and his friend were being rowdy and waving guns around in this bar, so I went to carry them out. One kid got mouthy and was trying to kick my ass, and at one point he reached inside his jacket. I assumed he was going for the gun that I'd heard about, and I shot him. He was going for a cigarette."