From the Justice Dept, this website: Helping Victims of Mass Violence and Terrorism; Planning, Response, Recovery, and Resources.
While you’ll find all the resources you need to compassionately incorporate victim care into your mass shooting or terrorism plans, this toolkit will apply to any emergency. The kit, created by the U.S. Justice Department Office for Victims of Crime, is ready to go for emergency managers, law enforcement, and other responders who want to build partnerships, establish victim assistance protocols, and help their communities as they recover from tragic events.
Source: Univ. of CO, Hazards Center, Disaster Research News , Sept. 10