Wounded officer at Tennessee school not shot by student's gun NBC NewsWhat we know — and don't know — about the Knoxville high school shooting that killed a 17-year-old WBIR Channel 10Knoxville police identify student killed after bringing gun to high school Fox NewsKnoxville police did not call crisis negotiators to talk to armed teen in school bathroom Knoxville News SentinelOfficer hurt in Tennessee school wasn't shot by student's gun KOMO NewsView Full Coverage on Google News