Sheriff John Robertson started his law enforcement career with the San Mateo, (California) Police Department in 1981. He moved to the Napa Sheriff's Office in 1991, where he worked his way through the ranks and was appointed Sheriff by the Napa County Board of Supervisors, on April 6th, 2012. John holds a Bachelor’s Degree in Criminal Justice from San Diego State University and is a graduate of the Sherman Block Supervisory Leadership Academy, Leadership Napa Valley and the Senior Management Institute for Police (SMIP - Boston, Mass). He is a member of the California State Sheriff's Association, California Peace Officers Association, Police Executive Research Forum and Leadership Napa Valley. Sheriff Robertson is the Sheriff-Coroner and premier law enforcement official in Napa County. He has the ultimate responsibility for overseeing the Coroner's Office, Field Operations, and Service Division's of the Sheriff's Office. The current Sheriff's Office staff consists of one hundred four, allocated, sworn deputy positions and thirty six support staff positions.
Undersheriff Jean Donaldson began working for the Napa Sheriff’s Office in 1988. He has been assigned to Patrol, Investigations, Civil/Coroner and the Napa Special Investigations Bureau. Jean holds a Bachelor’s Degree in Criminal Justice Administration from California State University at Sacramento and is a graduate of the FBI National Academy. He coaches youth sports, including the Sheriff’s Activities League wrestling team. As Undersheriff, Jean recommends policy to the Sheriff and oversees the daily operation of Administration, Operations, Services, and the Coroner's Office.
Captain Tracey Stuart began her career as a Reserve Peace Officer with the Calistoga Police Department. In 1989, she became a full-time peace officer with Calistoga and worked there for six more years. In 1995, Tracey began working for the Napa County Sheriff’s Office. She was promoted to sergeant in 1998 and to lieutenant in 2007. Tracey has a Bachelor’s Degree in Management and is a graduate of the Sherman Supervisory Leadership Academy.As the American Canyon Police Chief, Tracey is responsible for the management, direction, and control of operational and administrative aspects of the law enforcement in the City of American Canyon. Her current staff includes four sergeants, eighteen police officers and two police technicians.
Captain Steve Blower started his law enforcement career in 1988 at the 9th Napa College Basic Police Academy using the Veterans Educational Assistance Program, after he recieved an Honorable Discharge from the US Army. He was hired by the Napa Sheriff’s Office in January of 1989. Steve worked on Patrol in unincorporated American Canyon and was the first Deputy assigned to the City of American Canyon after incorporation in 1992. He was a member of the first gang task force in Napa County, the Investigations Division and the Napa Special Investigations Bureau. After being promoted to Sergeant in 1999 he worked in the Napa Special Investigations Bureau, Patrol Division, Coroner’s Office, Civil Process Unit, Transportation Unit, Court Security and Investigations Division. In 2009, Steve was promoted to Lieutenant and assigned to the Napa County Department of Corrections and Court Services. Steve is a graduate of the POST Sherman Block Supervisory Leadership Institute. Steve is currently assigned as the Captain of the Services Division and manages the Coroner, Court Services, Civil Process, Transportation and Technical Services/Record's bureaus.
Captain Keith Behlmer attained a Bachelor’s degree in Public Justice, from The State University of New York at Oswego in 1981. He started his law enforcement career in 1986 when he was hired by the Napa County Sheriff’s Department and attended the Santa Rosa Police Academy. He has worked as a police officer for the City of Richmond and has had several positions within the Sheriff’s Department including, weaponless defense instructor, firearms instructor, K9 officer, narcotics investigator and SWAT. Keith was promoted to Sergeant in 2004 and has been assigned to American Canyon, NSIB and The Town of Yountville.Keith is currently assigned as the Operations Captain. Keith is responsible for the Department's Operations Division, including Patrol and Investigations.
Lieutenant Thomas Commander attained a Bachelor’s Degree in Public Justice from the State University of New York (Oswego) in 1989 and relocated from New York to California. He began his career with the Napa Sheriff’s Office in 1990, and worked as a police officer for the City of Vallejo and in several Sheriff’s Office assignments before being promoted to sergeant in 1999. Thomas implemented and acted as the coordinator for the first four Napa Sheriff Citizen’s Academy classes. Thomas was promoted to Lieutenant in 2005. He attended the Santa Clara County Leadership Program in 2002 and graduated from the West Point Leadership Program (WPLP) sponsored by the Los Angeles Police Department in 2008.
Thomas is currently assigned to the Patrol Division.
Lieutenant Pete Berg began his law enforcement career in 1989 with the Ukiah Police Department. Pete was hired in 1991 by the Napa Sheriff's Office. During his employment with the Sheriff's Office, Pete has worked as a K-9 Officer, a Firearms Instructor and a Field Training Officer. In 2003, Pete was promoted to sergeant and was assigned to the Court Security Bureau. He then transferred to serve as the sergeant in charge of law enforcement services for the Town of Yountville. Pete holds a Bachelor's Degree from Chico State University and is a graduate of the Sherman block Supervisory Leadership Institute. Pete is also a graduate of the FBI Acadmey, class 249. Pete is currently assigned as an Administrativel Lieutenant.
Lieutenant Chris Carlisle was hired as a Deputy Sheriff for
Lake County in 1994. He continued to work there as a Deputy Sheriff until
2000 when he was hired by Napa County as a Deputy Sheriff. He worked
numerous assignments including Patrol, Bailiff, Field Training Officer, POPP
Unit, Coroner Investigator, Detective and Sergeant for the Marine Patrol unit.
He works as a liaison between County Mental Health and Crisis to address
best practices dealing with citizens in Crisis and related training for
Department personnel. He has an AS Degree from Butte Junior College
and completed his upper graduate in Business Administration at PUC in Angwin.
is currently assigned as the Administration Lieutenant conducting hiring and
background investigations and training for the department.