We do live in perilous times, and this means that someone with evil intent can walk through the doors of the church at any time and inflict violence on many. I had the opportunity some time ago to visit with a young man who had been in a church during an attack and it was a harrowing account.
A colleague of mine recently forwarded information that addresses a plan for churches to be prepared when the unthinkable happens.
Check it out at Brotherhood Mutual.