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Lieutenant Jon Thompson started his law enforcement career in 2001 with the Calaveras County Sheriff’s Office. In 2005 he joined the Napa County Sheriff’s Office and has worked assignments that include Patrol, Problem Oriented Policing, Investigations, Field Training Officer and K-9 Handler. He promoted to Sergeant in 2017 where he was a Patrol Supervisor, K-9 Unit Supervisor, Mobile Field Force Supervisor, Mounted Posse Supervisor and Marine Unit Supervisor. He was promoted to Lieutenant in 2021 and is assigned to the Patrol Bureau.