"It was all handled by our security and safety team, which was a blessing to have in place," Pastor Bobby Kelly Jr. said.

Trombley, who refuses to call himself a hero, emphasized a lesson from the experience: "You are your own first responder. You are the first person on scene. It doesn't matter if it's someone trying to hurt you, an injury, something -- you are your first responder."

One person was killed and another was injured in a shooting at a suburban Detroit church on June 22, authorities said.