Executive Team

Jeff Newnum is the Chief Deputy for the Yavapai County Sheriff’s Office. He has been with the agency for 25 years. He promoted through the ranks of law enforcement and has commanded both the Law Enforcement Services Division and Detention Services Division. He is a veteran of the United States Army and is a graduate of the FBI National Academy in Quantico, Virginia.

Tom Boelts is a Commander with the Yavapai County Sheriff’s Office leading the Detention Services Divisions.  Tom started his career with The Yavapai County Sheriff’s Office in 1994 as a Detention Officer in the Eastern Detention Bureau.  In 1995 he became a Deputy working in the Verde Valley area.  In 2010 he was promoted to the rank of Lieutenant and assigned to the Criminal Investigations Bureau until 2016 when he was assigned as the Northern Area Command Lieutenant, he managed patrol activities for the Prescott, Ash Fork, Seligman, Bagdad and Yarnell substations.  In 2021 he was reassigned to Criminal Investigations, then in 2022 promoted to the rank of Captain and assigned to the Law Enforcement Bureau where he managed the operations of the Patrol, Criminal Investigations and PANT Bureaus. In 2023 he promoted to Commander. He managed the Law Enforcement and Administrative Services Divisions for two years. He now manages the Detention Services Division.

Commander Tom Boelts earned a Bachelors degree in Accountancy from The University of Montana in 2004 and has completed the Senior Management Institute for Police through the Police Executive Research Forum in 2011. 

Commander Boelts has presented around Arizona and the country on Missing and Exploited child cases as well as Human Trafficking enforcement.

Brent Kimbriel is a Commander with YCSO. He began his law enforcement career in 2010. During Brent’s employment at the Yavapai County Sheriff’s Office, he has been assigned to Patrol, Search & Rescue and S.W.A.T. His assignment to these duties has been as a front-line Operator, supervising Sergeant, and commanding Lieutenant. He was the Division Commander for the Detention Services Division for two years. He is now assigned as Division Commander managing the Law Enforcement Services Division and the Administrative Services Division for the Yavapai County Sheriff's Office.

Commander Kimbriel has managed numerous Search & Rescue operations and S.W.A.T operations conducted within Yavapai County. He received the Yavapai County Sheriff’s Office Medal of Merit for a hostage rescue intervention at a home with active gunfire during a patrol shift. He is a graduate of the FBI National Academy. He is committed to public safety with his leadership of the Yavapai County Sheriff’s Office Law Enforcement Services and Administrative Services Divisions.  

Christy Awtrey-Tieman is an experienced leader and an integral part of the Yavapai County Sheriff's Office executive leadership. She has over 20 years of experience in leadership in the public and private sectors. She was previously a CFO at two Arizona-based construction companies. She also has prior leadership experience in Arizona law enforcement.

Christy is the Division Administrator for the Business Services Division at YCSO. In her role she brings tremendous knowledge in management, budget processes and public affairs to the executive leadership team. She is an integral part of coordinating project managment and process improvements within the agency.

Christy has a Bachelors of Business Administration with a specialization in Management from Northcentral University. She is a graduate of the AZPOST Arizona Leadership Program, FBI Supervisory Leadership Institute, and the National Association of Counties High Performance Leadership Academy.

John Johnson has served with the Yavapai County Sheriff's Office for over 21 years. He started in the Camp Verde Detention Facility and moved to patrol as a deputy two years later. He became a detective in the Criminal Investigations Bureau, investigating serious felonies, mostly crimes against persons. John was a detective sergeant for five years, investigating or leading similar investigations.  

While in the Criminal Investigations Bureau, John began working on a Bachelor of Science in Software Engineering from ASU, an ABET-accredited degree program. He graduated with Summa Cum Laude honors in May 2021.

John was a leader in the Patrol Bureau as a Sergeant and then Lieutenant. John is an active member of the Sheriff's Office Incident Command Team, where he has led or assisted with responding to numerous fires and floods requiring evacuations.

Captain John Johnson is assigned to the Law Enforcement Services Division, leading the lieutenants in the Criminal Investigations Bureau, PANT(an interagency narcotics and human trafficking taskforce), Recruitment and Training.

Jarrod Winfrey is a Yavapai County native who has served with the Yavapai County Sheriff's Office for over 21 years. He began his career at the Camp Verde Detention Center and was later assigned as a patrol deputy to the Eastern Area Command two years later. In 2010, he was assigned to the Partners Against Narcotics Trafficking Taskforce, where he would spend 12 years in different roles, including detective, K9 deputy, K9 sergeant, and detective sergeant. During this time he also attended the Northern Arizona University where he graduated in 2016 with a bachelor's degree in Applied Human Behavior.

Jarrod was soon promoted to lieutenant and was assigned to lead both Northern and Southwest Area Commands. He later returned to the PANT task force as the commander before settling into Support Services Bureau as the administrative lieutenant overseeing Recruitment and Selection, Civil Unit, Traffic, and other units.

In July, 2025, Jarrod was promoted to Captain in the Law Enforcement Services Division, assigned to Patrol, responsible for leading the lieutenants in each of the four area commands, SWAT, Forest Patrol, SROs, and volunteers.

Eric Stumpf is a Captain with YCSO. Eric has been with the Yavapai County Sheriff’s Office since 2006.  He promoted through the ranks of Detention Services and is currently responsible for the Prescott Detention Center.  He is a graduate of the National Jail Leadership Command Academy, Class #40.

Joseph Lincoln III is a Captain in the Detention Services Division. He started with the Sheriff’s office in 2007 and started in the Prescott Jail on Gurley Street. Joe was a member of the Special Response Team for many years as an officer and is currently the team Commander. He was also part of the County’s Incident Command Team. Captain Lincoln is currently responsible for the Camp Verde Jail facility.

Samantha Russell is a long-time resident of Yavapai County.  Being involved in the community is important to her and has volunteered with the Big Brother Big Sisters organization as well as other local youth sports programs.  She joined the agency in 2006 as a Public Safety Telecommunicator with prior Human Resources experience.  She worked her way to the top of the Bureau, promoting into a Public Safety Supervisory position in 2011 and a Business Manager over Administrative Services in 2019. 

In 2022, Samantha Russell promoted to the rank of Director overseeing the operations of the Support Services, Communications and Records Bureaus of the Administrative Services Division.  She is always striving to improve public safety within the community and agency.    She has received several acknowledgments from the Sheriff’s Office over her years of service.  She attributes this motivation following an award she received from The Association of Public-Safety Communications Officials (APCO) and the National Emergency Number Association (NENA) in 2010, for her bravery and excellence in work as a public safety professional. 

During her time with the agency, Director Russell has assisted in implementing advancements to the 911 center, records management to include complying to federal mandates and serving as the 9-1-1 Administrator of Yavapai County for the State of Arizona.  She has also had the opportunity to participate in specific law enforcement and leadership programs. She credits her 16 years of experience in public safety to her success within the agency as well as her education in Human Resources and Management.

Beya Thayer is the Executive Director of Behavioral Health Services & the Yavapai Justice & Mental Health Coalition.

Beya Thayer is a systems advocate supporting enhanced collaborations among multi-disciplinary teams and enjoys the opportunity to work as the Director of Behavioral Health Services for Yavapai County Sheriff’s Office as well as the Executive Director of the Yavapai Justice and Mental Health Coalition.  Beya works to develop and implement strategies that lead to the long-term and sustainable involvement of community institutions, organizations, and individuals within the intersections of justice and behavioral health - with the goal of addressing partnership and systems change.  Beya’s career has given her the opportunity to create partnerships and collaborations with diverse communities, professions, and agencies throughout Arizona to effect policy and change on both the micro and macro levels.