We cannot control the motives or demons that afflict mass shooters, but we can control the environment to a degree. This means that schools must think broadly. Preparation and training is not only critical to campus and local law enforcement; all potentially involved individuals — to include students, faculty, administration and staff, contractors, etc., should be included in such plans. Rather than pretending that tragedies cannot visit your campus, it’s time to bring all members of a school’s community together and acknowledge that it just might. And then talk openly about how to respond should the unthinkable occur.