I work for the Houston Police Department. We were one of five departments that received a Collective Healing demonstration grant from the International Association of Chiefs of Police (a subgrant from a larger amount they received from DOJ/OVC) to help make our departments more trauma-informed. The Vicarious Trauma Toolkit is a great place to start for law enforcement. You can access it here: https://ovc.ojp.gov/program/vtt/introduction
Don't hesitate to reach out if I can answer any additional questions about our work or connect you with others who were involved in this effort.
Cheryl