Video of the Fort Worth church shooting is here:
https://www.thetruthaboutguns.com/vi...ooded-shooter/
The attacker stood up from a pew and pulled out a shotgun. One of the church members attempted to draw a pistol and was shot. A second church member was shot by the attacker and then a retired FBI agent at the very back of the church fired a single shot, stopping the attack and hitting the shooter (who was in front of the first pew and off to the side).
From what I can tell, at least five additional church members were carrying and drew pistols; but in the time it took them to react, observe, and orient, the immediate threat was already over.
ETA: News reports say 2 dead and 1 critically injured but different news agencies are claiming different people were injured so I edited my post to not spread incorrect info.
Also, the video involves people being murdered in a church in front of their families and includes audio, so you may find it distressing.