164. Retired Police Lieutenant Derek Johnson on breaking down the blue wall
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Derek Johnson is a retired police lieutenant that has extensive training and certifications involving Lethal Force Investigations. Derek has served as a marine and held many law enforcement positions including: Community Resource Officer, Violent Crimes Detective, Supervisor in the Narcotics Division, Federal Drug Task Force Patrol Division, and Detective Sergeant of Internal Affairs. The post 164. Retired Police Lieutenant Derek Johnson on breaking down the blue wall first appeared on Sifu Mimi Chan.
