Alabama state lawmaker, Rep. Ernie Yarbrough, a Republican and father of four, is expressing relief after his son, 6, accidentally shot his older brother, 13, in the back of the shoulder with the father's rifle. The incident occurred at their Lawrence County home while Yarbough and his wife were home. It is unclear how the boy managed to retrieve the dad's.556-caliber AR-style rifle from a bedroom while the incident occurred. The Lawrence County Sheriff's Office notified the Alabama Department of Human Resources, which is required when children are involved in a shooting. The shooting is under investigation by the Lawrence County District Attorney's Office.