The Knoxville Fire Department says that they have trained for incidents like the one today at a local high school.
Knoxville Fire Capt. D.J. Corcoran told CNN in an email that the department has trained with the Knoxville Police Department 's SWAT team for incidents like today's shooting at Austin-East Magnet High School.
"Unfortunately that training was used today when responding to Austin East high school," Corcoran said in the email. "As far as our response to the incident, it was a successful one."
He said this is the fifth fatality surrounding the high school in the last few months and the community is "devastated."
"Our hearts go out to the family of the deceased and to the officer and his family. Please pray for our community," he said.