Pastors across the country have to consider how to prevent or prepare for such a situation. Will churches now have armed guards or bouncers at their doors? Will they create tactical strategies and make sure that certain members are armed at church services?
Churches will always be soft targets. Attendees gather to worship, to fellowship. They don't expect violence. Preparing to respond to violence would tend to distract from connecting with the Lord. I make sure that I bring my Bible. I don't even think about my .357.
So, it seems that churches can choose how to prepare. At one extreme, they can arm themselves, ready to take out a threat. At the other extreme, they can change nothing, realizing that they are soft targets.
I think I know which course Jesus would choose. He himself was a soft target. He let himself be killed. He trusted his Father, even knowing that he was headed into danger. The Father used his sacrifice to change history.
And this is the Man we are to follow.