Somebody come in here and tell me how an AR-15 was more effective than a handgun against a knife in this situtation.
Thomas, a gun instructor, peeked out the door and saw blood in the hallway. He went to his bedroom, where a handgun and an AR-15 assault-style rifle were lying on the bed. He picked up the rifle.
"I teach people how to defend themselves, and it was just a reaction to grab the AR-15," he said.