They tackled him as he tried to reload. They were not armed. If the guy who first confronted him as he came into the church *had been* armed, he might still be alive, and the lady who died almost certainly would be. The injured would not be injured. Even if the first guy only slowed him down, and others had been armed, the toll would have been much lower, except the toll of attackers, which would stand at 1.
I had heard via radio news that the gunman HAD been halted by "armed" people at the church.
Perhaps it was my assumption they meant "carrying". Thanks for setting me straight.