Guns, of course. The Christian Coalition in Georgia, USA has expressed its support for a piece of state legislation that would include churches in the places where citizens can legally carry a concealed firearm.
In case you're wondering why anyone would feel the need to make their religious observances while armed to the teeth, the Coalition's leader Jim Beck explained that "many of the state’s megachurches would like the option of using their congregants as an informal security force."
And why not? If you're going to gather thousands of worshippers together in one place, you may as well have them doubling up as a heavily armed paramilitary force.
This story is ultimately just another case of life imitating satire, as back in 1996 classic comedy show Brass Eye reported on the problem of guns in American churches: