KNOXVILLE, Tenn. (AP) — A gunman opened fire at a church youth performance Sunday and killed two people, including a man who witnesses called a hero for shielding others from a shotgun blast. Seven adults were also injured but no children were harmed at the Tennessee Valley Unitarian Universalist Church. Church members said they dove under pews or ran from the building when the shooting started. The gunman was tackled by congregants… Keep reading