Assistant Sheriff Clint Shubel
Assistant Sheriff Clint Shubel grew up in Santa Rosa and graduated from Santa Rosa High School. After college, he began his law enforcement career in 1994 with the Sausalito Police Department. In 1997, he joined the Sonoma County Sheriff’s Office where he worked as a Deputy Sheriff at the Main Office, Roseland substation, the Sonoma Valley substation. Clint held collateral assignments such as SWAT team member, Field Training Officer, and training instructor.
In 2004, Clint worked as a Violent Crimes Investigations detective until he promoted to Sergeant in 2006. As a Sergeant, he worked as a Main Office patrol supervisor, Sonoma Police Department supervisor, SWAT team supervisor, and Coroner’s Office supervisor.
Clint became a Lieutenant in 2011 and served as a Watch Commander, a tactical commander of the Special Operations Unit, and managed the Court Services and Transportation Bureaus. As Administrative Captain, Clint oversees and manages the Administration Division of the Sheriff’s Office, Investigations Bureau, Internal Affairs, Personnel, Records, and Information Technology Bureaus.
In 2017 Clint was promoted to Assistant Sheriff and now oversees the Law Enforcement Division of the Sheriff's Office.
Assistant Sheriff Randall Walker
Assistant Sheriff Randall Walker is a 23-year veteran of the Sonoma County Sheriff's Office. Since his hire in 1991, he has worked a multitude of assignments and has gained invaluable experience and knowledge of all levels of supervision and management. As a Correctional Officer, Randall was assigned to several specialty positions. He then promoted to Sergeant in 1996 and supervised several programs and units including the Mental Health and Facility Training Programs. After his promotion to Lieutenant in 2001, he oversaw numerous teams and played an integral role in developing the Detention Division's Crisis Negotiations Team; the first of its kind in California. Randall promoted again to the rank of Captain in 2007 and was responsible for operations in both detention facilities.
As Assistant Sheriff, Randall oversees the Detention Division and all Detention related services. The Detention Division of the Sonoma County Sheriff's Office is comprised of over 300 employees including both sworn and civilian staff as well as numerous community volunteers. Included in the Division are the Main Adult Detention Facility, North County Detention Facility, Inmate Programs, Electronic Monitoring Program, and Court Movement.
Assistant Sheriff Walker was born and raised in Pittsburg, Pennsylvania and served 9 years active duty in the United States Army prior to joining the Sheriff's Office in 1991. He has remained committed to continuing his education and has completed multiple courses in supervision, management, and leadership to include the National Jail Leadership Command Academy in Houston, Texas. Randall and his wife are proud parents of three boys. He looks forward to continuing his public service to Sonoma County and its citizens.
Law Enforcement Division Administrative Captain Mark Essick
Captain Mark Essick grew up in Marin County. He attended California State University, Sacramento where he earned a Bachelor’s Degree in Criminal Justice in 1993.
Mark began his career with the Sonoma County Sheriff’s Office in 1994. Starting in the Detention Division as a Correctional Deputy, he later joined the Law Enforcement Division in 1996 as a Deputy Sheriff where he worked a variety of assignments including main office patrol, Roseland substation, the contract Town of Windsor, Field Training Officer and Property Crimes Detective. Mark went on to earn a Master’s of Business Administration from Golden Gate University, San Francisco in 2002.
In 2007, Mark promoted to Sergeant working as a main office patrol supervisor, Windsor Police Department supervisor and Bomb Squad supervisor. In 2014 Mark promoted to Lieutenant. In addition to working as Patrol Watch Commander he managed a variety of specialized units including the Helicopter Unit, the Bomb Squad and the Marine Unit. In 2015 Mark moved to the Administrative Division managing the Sheriff’s Office Personnel and Internal Affairs units. In 2016 after promoting to Captain, Mark returned to Field Services Division where he is responsible for overseeing and managing the Patrol Bureau, Dispatch Bureau, Court Security / Transportation Bureau and the contract cities of Windsor and Sonoma.
In 2017, Mark became the Administrative Captain, overseeing Personnel, Records, Community Outreach, Information Technology, Radio, Professional Standards, and Investigations/Coroner Bureaus.
Law Enforcement Division Field Services Captain Al Vernon
Captain Al Vernon was born at Fort Ord and grew up in Seaside, California. Al has been a member of the Sonoma County Sheriff’s Office since 1991. Al began his career here as a Civilian Sheriff’s Aide and worked in the Detention Division and the Patrol Civil Bureau. In 1992, Al was promoted to a Correctional Deputy and worked in various positions and specialty assignments in the Detention Division, to include Facility Training Officer and SERT Team Member.
He joined the Law Enforcement Division in 1996 as a Deputy Sheriff and has worked at the Main Sheriff’s Office and the Sonoma Valley substation. Al held collateral assignments such as Canine Handler, Field Training Officer, Tactical Team member, and Violent Crimes Investigator.
Al promoted to Sergeant in 2007. As a Sergeant, his responsibilities included, Main Office Patrol Supervisor, Tactical Team supervisor, and Internal Affairs Investigation Sergeant.
Al promoted to Lieutenant in 2013. He served as a Watch Commander in Field Services. Al’s duties included overseeing Patrol responsibilities in the Larkfield, Roseland, and Santa Rosa areas. He managed several collateral assignments to include the Field Training Program, the Canine Program, the Peer Support Program, the Sheriff’s Office Tactical Team, and he had oversight and management responsibilities for the Crisis Intervention Training (CIT) Program, Mobile Support Team (MST) and the Crisis Stabilization Unit (CSU).
In 2017, Al was promoted to Captain and oversees the Field Services Division, responsible for Patrol Bureau, Dispatch Bureau, Court Security/Transportation, and the contract cities of Windsor and Sonoma.
In his spare time Al enjoys spending time with his family and assists with coaching high school football.
Detention Division Administrative Captain John Naiman
John has been employed with the Sonoma County Sheriff’s Office since February 1995. Prior to joining the Sheriff’s Office, he honorably served in the military. As a Correctional Deputy, John held many collateral assignments, including Facility Training Officer, Classification Deputy, and Specialized Emergency Response Team member. John was promoted to Correctional Sergeant in 2002 and held Specialty Collaterals such as Specialized Emergency Response Team Supervisor and Internal Affairs Investigator.
ander at the Main Adult Detention Facility, John also served as the Manager for the Detention Divisions Specialized Emergency Response Team, and Crisis Negotiating Team.
As Captain, John oversees various components of the Detention Division Administration.
Detention Division Operations Captain Mazen Awad
Correctional Captain Mazen Awad started his corrections career in 1994 at the Napa County Department of Corrections. In February of 1996, Mazen joined the Sonoma County Sheriff’s Office as a Correctional Officer where he worked many assignments to include FTO and Classification Officer. In June of 2001, Mazen promoted to the rank of Correctional Sergeant. As a sergeant, Mazen held the positions of FTO Sergeant and later Internal Affairs Investigator.
In June of 2007, Mazen promoted to the rank of Correctional Lieutenant. During this nine year period, Mazen worked as a Swing Shift Watch Commander, managed Support Services Operations and more recently managed the Classification Unit, Inmate Programs, Pre-Trial Release and Electronic Monitoring programs. .
As Captain, Mazen oversees various components of the Detention Division Operations at both detention facilities.
Administrative Services Director Heidi Keith
Heidi Keith is a long-standing County and Sheriff’s Office employee whose career has exposed her to all aspects of the Sheriff’s Office operations.
Heidi graduated locally from Montgomery High School. She attended California State University, Chico where she earned a Bachelor’s degree in Political Science and Speech Communication. Heidi went on to earn a Master’s in Public Administration from USC’s School of Public Policy, Planning, and Development. She started her public sector career while in college where she worked for several elected State officials including Governor Deukmejian. Before joining the Sonoma County Sheriff’s Office, Heidi worked for several cities, including the City of Roseville for 8 years. During her 8 years with the City of Roseville, Heidi worked as an Analyst for the City Manager and later was promoted to the position of Transportation Manager in the Public Works Department.
After returning to Santa Rosa in 1997, Heidi secured the position of Department Analyst for the Sheriff’s Office. Heidi spent several years working directly with law enforcement and detention operations staff before being promoted to Administrative Services Officer (ASO). She held the ASO position for 7 years where her main responsibility was the overall development and management of the Sheriff’s Office budget, contract administration, and grant management. Heidi was promoted to Administrative Services Director in 2012. During her tenure with the Sheriff’s Office, Heidi has been involved with all of the administrative and fiscal aspects of both the Law Enforcement and Detention Divisions including all twenty one Sheriff’s operating bureaus.