Tennessee ? A gunman opened fire at a church youth performance Sunday, killing two people, including a man 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 in Knoxville. Members said they dove under pews or ran from the building when the shooting started.

Congregants tackled the gunman.

Jim D. Adkisson, 58, was charged with first-degree murder and held on $1 million bail.

The slain man was identified as Greg McKendry, 60, a longtime church member and usher. Church member Barbara Kemper told The Associated Press that McKendry “stood in the front of the gunman and took the blast to protect the rest of us.”

Linda Kraeger, 61, died at the University of Tennessee Medical Center a few hours after the shooting.

Five people remained hospitalized, all in critical or serious condition. Two others were treated and released.