participate. they explained to us in a group that is very close, most of these people know each other, they came together, they have fun together, and now they are all traumatized. i ve been telling them for a while that we need you need to make players feel safe. eric: there are those horrible and shocking moments of that video game tournament in jacksonville. the suspect in the tournament come on 24-year-old david katz opening fire killing two gamers and wounding nine others before they say he turned the gun on himself. his killing spree all because he had lost his round. former superintendent and chief of police joins us, he was also the incident commander for the boston marathon bombing. let s be blunt. what can we do about the shooters, young white males in their 20s for whatever reason, you can take your anger and resentment out and failures at the point of a gun, katz