So he is a security guard, whether he had a license or got paid, he did in fact provide security.
But because he was not an officially credentialed security guard, he only unofficially stopped the attacker... who is unofficially in the hospital. And the congregation was unofficially protected.
"It's good to be credentialed."
Well of course. That way some government can decide who's worthy, and levy a tax.
Gotta keep the peasants under control don't you know.