The Colorado shootings have highlighted a growing trend:  Churches need security too.  This has been well known to the Jewish community for years.  In fact, the Anti-Defamation League has published a Security Manual designed for synagogues but applicable to almost any house of worship.  If you are concerned about the security of your church, temple, or mosque, you should download this manual.  It is filled with lots of useful information for you to consider and apply as you see fit.