The simulation, run by Christian Carrillo for InVeris Training Solutions, put Myers in a realistic school shooting scenario. It’s part of a demonstration outside the National School Safety Conference. Jillian Peterson, who leads the Violence Prevention Project Research Center at Hamline University, has interviewed people who planned a school shooting, but didn’t carry it out. SONALI RAJAN: The school safety and security industry has grown rapidly over the past decade in particular. RAJAN: The challenge right now is that these school safety products, the vast majority of these have absolutely no evidence guiding their effectiveness.