[OrangeDaisy]

This article says the gunman killed a member of the church’s security team, and another security team member shot and killed the gunman.

https://www.nytimes.com/2019/12/29/us/fort-worth-church-shooting.html

[RandallFlagg]

From your link:

Mr. Tinius said there were multiple trained people on the security team.

THAT'S how it's done!