The OP was presenting a scenario to us, and asking for input/ideas, from people who have experience with this particular situation, or experience with security in general. I havent ever been asked to secure a church, but I HAVE been part of security on military bases, for Olympic games, and several state functions. They arent the same as a church, mind you-people expect to see the security forces in places where I had worked. A church is a little different, and congregants may, or may not, approve.
All that being said, I hope you at least have some ideas here that you can take with you, for better or worse. Good luck in your decisions, and I sincerely hope that it never comes to you having to use security to actively defend your congregants.

Benjaminn, good debating with you as well.


Bill