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Command Staff Profiles

Sheriff Edward N. Bonner

Image of Sheriff Edward N. BonnerSheriff Edward N. Bonner began his law enforcement career with the Placer County Sheriff's Office in 1974. His assignments have included time in the Patrol, Corrections, and Investigations Divisions. He was promoted to Sergeant in 1979 and transferred to the North Lake Tahoe Substation working Patrol and Investigations. In 1983 he assumed the position of acting Lieutenant and in 1985 was promoted to Captain and served as the Substation Commander for seven years. In 1992 he was promoted to Undersheriff and returned to the Auburn area.

Sheriff Bonner was originally elected as Placer County's Sheriff in June of 1994 and took office on December 30, 1994. He ran unopposed during the 2010 election and started his fifth term in January, 2011.

Sheriff Bonner has completed an extensive array of management and professional training courses, including POST Command College, Jail Management, Internal Affairs, Advanced Police Management, FBI National Academy (139th Session), POST Management School, National Sheriffs' Institute, POST Executive Development, FBI Law Enforcement Executive Development Seminar (LEEDS). He possesses many professional certificates and is an instructor of ethics in criminal justice at Sierra College in Rocklin; he has taught transition management at the California Command College. Sheriff Bonner earned a Master's Degree in Management Science at Cal Poly, Pomona, in 1992; and a Bachelor of Arts in Criminology at University of California, Berkeley, 1973.

Sheriff Bonner was an honor student at Del Oro High School in Loomis. He grew up in Placer County and excelled in sports as a high school student. He was the first 4 year varsity letter winner at University of California in track and field. Sheriff Bonner earned the rank of Eagle Scout in 1965 and additionally earned a bronze palm and as an adult was a Silver Bear Recipient. He was student body president at Del Oro High School in 1968.

His professional affiliations include:

  • Past President of the Child Abuse Prevention Council
  • FBI National Academy Association
  • Command College Alumni Association
  • University of California Alumni Association California State Sheriffs' Association Executive Board
  • President, California State Sheriffs’ Association - 2008

Sheriff Bonner and his wife, Jeanne, have two sons, Andrew and Matthew.

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Undersheriff Devon Bell

Image of Undersheriff Devon Bell

Undersheriff Devon Bell began his career as a deputy with the Placer County Sheriff’s Office in 1992. He has worked a wide variety of assignments within the organization including Corrections, Patrol, Support Services and the Special Investigations Unit. As a sergeant, he was assigned to the North Lake Tahoe Station for nearly two years in Field Services. He later transferred to the South Placer Station where he directed the Community Services Unit which includes school, youth services, and the volunteer programs. Bell then promoted to lieutenant in the Support Services division and later was promoted to the rank of Captain overseeing that division. In December of 2006, he was named as Placer County’s first ever Assistant Sheriff. The position was created because of the tremendous growth and need for administrative support.

In November of 2007, Sheriff Ed Bonner promoted Assistant Sheriff Bell to the rank of Undersheriff. “Devon is a highly respected leader in the Sheriff’s Office” said Sheriff Bonner. “His positive attitude, energy and work ethic have been demonstrated throughout his years here. He has a bright future as the newest member of the senior staff.”

As the agency’s second in command, Undersheriff Bell is responsible for oversight of the day to day operation of the Sheriff’s Office. Additionally, he serves on the California State Sheriffs’ Association (CSSA) Legislative Committee which reviews the myriad of legislative bills and initiatives generated in Sacramento with a goal of providing analysis and recommendations to California’s Sheriffs. He also serves as the co-chair for the CSSA Seconds in Command group which provides training and education to the all of the Sheriffs’ seconds in command.

Growing up, Devon was heavily influenced by his grandfather who served as a California State Park Ranger. This influence sparked an interest in public service culminating with his decision to join the Placer County Sheriff’s Office. Devon is a Loomis native and a Del Oro High School graduate. He holds a B.A. in Criminal Justice Management and a Master of Arts degree in Security Studies from the Naval Postgraduate School. Additionally, he has completed numerous management and training courses including Peace Officer Standards and Training (POST) Supervisory Leadership Institute (SLI), Community Oriented Policing Seminar (COPS), Internal Affairs, POST Management School, POST Executive Development School, Criminal Intelligence for Executives, FBI Law Enforcement Executive Development Seminar (LEEEDS) and the FBI National Academy (222nd Session).

Devon, a father of four and grandfather of two, currently resides in Roseville with his wife Sue. 


Support Services Commander Mark Reed

Image of Captain Mark ReedCaptain Mark Reed started his law enforcement career in 1990 with the Contra Costa County Sheriff’s Office and came to the Placer County Sheriff’s Office in 1994. During his career, Mark has worked as a Jail Deputy, Patrol Deputy, Burglary Detective, Crimes Against Persons Detective, Jail Sergeant, Patrol Sergeant and Transportation/Extradition Sergeant.

After graduating from the 6-week FBI Hazardous Devices School in Redstone Alabama, Mark joined the Placer County Sheriff’s Bomb Squad and eventually became the Bomb Squad Commander.

As a lieutenant, Mark worked in the Support Services Division before transferring to the Investigation Unit as the Investigation Commander and Public Information Officer.

Captain Reed holds a bachelor’s degree in Criminal Justice Management. Upon his promotion in 2013, he took over as the Support Services Commander. Captain Reed is married and lives in Rocklin.

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Field Operations Commander Wayne Woo

Image of Captain Wayne Woo Captain Wayne Woo began his law enforcement career in 1990 with the Lake County Sheriff’s Office and came to the Placer County Sheriff’s Office in 1994. He has worked a variety of assignments including corrections, patrol and investigations.

 As a deputy and sergeant he worked as a detective in the Burglary Unit, Special Investigations Unit and the Special Operations Unit. Wayne has been involved in the Training Division and served as a use of force instructor teaching defensive tactics, impact weapons, and firearms training.

 Throughout his career, Wayne spent over 18 years as a tactical team member. Prior to his promotion, he was the team commander of the Special Enforcement Team, where he worked as an operator, team leader and eventually the team commander.

 As a lieutenant, Wayne served as a patrol watch commander, patrol administrative lieutenant and served as the station commander for the South Placer Substation. Wayne was also assigned to the Placer County Incident Management Team.

Captain Woo holds a bachelor’s degree in Criminal Justice Management. Upon his promotion in 2012, he took over as the Corrections Division Commander. In 2013 he was transferred to the Field Operations Division where he is currently assigned.

Wayne is a Loomis resident and is married, with three children. He enjoys spending time outdoors mountain biking, running and adventure racing. . Send Email

Corrections Commander Don Hutchinson

Image of Captain Don Hutchinson Captain Don Hutchinson began his career with the Placer County Sheriff’s Office as a deputy in corrections and patrol in 1992. Four years later, in 1996, he started with the Special Operations Unit as a School Resource Officer and became the first SRO for Granite Bay High School.

In the fall of 1999, Hutchinson promoted to sergeant and transferred to the Tahoe substation working patrol. He transferred back to Auburn as a sergeant in the Corrections Division in 2000. In late 2001 he returned to the Tahoe substation as the administrative sergeant overseeing corrections and the community services units.

Hutchinson promoted to lieutenant in 2003 and served as the Administrative Lieutenant at the Tahoe substation. Two years later, in 2005, he transferred to the South Placer Substation to assume the role of Station Commander.

In June 2007, Hutchinson was promoted to captain and served as the commander for the Support Services Division. In 2013, he was assigned as the corrections division commander where he continues to serve.

Captain Hutchinson grew up in Fair Oaks, CA and graduated from Del Campo High School. He graduated with his B.S. in Occupational Studies; Law Enforcement, from California State University, Long Beach.

Captain Hutchinson resides with his family in the Newcastle area. He has sat on the board of directors of Sierra Mental Wellness Group since 1999.
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Tahoe Station Commander Dennis Walsh

Image of Captain Dennis WalshCaptain Dennis Walsh was raised in Placer County and began his career as a reserve deputy in 1992 and was hired as a full time deputy in 1993. As a deputy, Dennis worked in the Corrections Division, and as a patrol deputy in the Granite Bay, Loomis, West Roseville and Lincoln/ Newcastle areas. As both a patrol and jail deputy, Dennis served as a training officer and was instrumental in shaping the futures of many current deputy sheriffs.

Dennis was promoted to sergeant in 2003 and served as a first-line supervisor both on patrol and in the Corrections Division. In 2006 Dennis was assigned to run the Crimes Against Persons unit, and spent the next four years supervising a team of detectives that worked many high-profile and unusual investigations.

As a lieutenant, Dennis was assigned to the Corrections Division at a time when the county was still building a new jail and just prior to the implementation of California’s realignment legislation. He became directly involved in the county’s focus group to develop the Community Correction’s Partnership Plan, and was instrumental in identifying strategic plans and data collection processes to better position the Sheriff’s Office to meeting this new challenge.

In 2013, the county approved a budget to open the South Placer Adult Correctional Facility. Dennis participated in the formation of a transition team whose assignment was to get the new jail operational by May 17, 2014. Staff opened the facility for operational training on May 17, and began moving inmates into the facility on May 31.

Dennis was promoted to the rank of captain in July, 2014, and was assigned as the commander for the North Lake Tahoe Station. He brings with him a commitment to providing quality service to the citizens of Placer County and the many visitors that choose Tahoe as their vacation destination.

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Administrative Services Manager

Image of Mark GiacominiMark Giacomini began his career with Placer County as a Budget Analyst for the County Executive Office in 2005, and was promoted to the position of Senior Management Analyst in 2007. In 2014, after nine years in the County Executive Office, Mark joined the Placer County Sheriff’s Office as the Administrative Services Manager.
As a member of the County Executive’s Health and Justice team, Mark served as the lead Senior Management Analyst for Health and Human Services, Placer County Fire, Office of Emergency Services, Sheriff’s Office, District Attorney’s Office, and Probation Department. In this role, he was responsible for policy and budget, including oversight of Public Safety Fund budgetary and fiscal management.
Mark enlisted in the United States Navy in 1982, and served 21 years on active duty, until he retired in September 2003. His first 10 years were served in the enlisted ranks at duty stations in San Diego, Mississippi and Virginia. While stationed in Virginia, Mark was deployed multiple times to the Mediterranean Sea, Indian Ocean, and North Atlantic Ocean onboard the aircraft carriers USS Independence (CV-62) and USS Forrestal (CV-59).
Mark received his Bachelor of Science in Business Administration from Old Dominion University in Norfolk, Virginia in 1991, and was commissioned to the rank of Ensign that same year. He spent the next 12 years as a Navy Supply Officer serving at duty stations in Georgia, San Diego, Nevada, China Lake, and Guam. Upon his retirement from the Navy, Mark moved to Auburn to be near his children. His first post-military employment was as an operations manager at the Target Distribution Center in Woodland, California. He was with Target for nearly two years, until he accepted his initial position with Placer County in 2005.
Mark continues to reside in the Auburn area. He has three sons, and is an avid San Francisco Giants and 49er fan. When he’s not at work, you’ll most likely find him on a golf course somewhere.