Professional Standards Personnel

Lieutenant Brad Barnhart

Lt. Bradley W. Barnhart began pursuing a career in criminal justice in 1997 after graduating Hocking College School of Natural Resources with Associate Degrees in Ranger Services and Recreation/Wildlife. In May 1998 he was employed as a Law Enforcement Park Ranger with the U.S Fish and Wildlife Service and National Park Service serving in Yellowstone National Park and other remote areas throughout the U.S. After returning home to Ohio in 2001 he completed the Clark State Police Academy and was selected for a deputy sheriff position with the Clark County Sheriff’s Office in February of 2002.

Lt. Barnhart continued advancing his education and in 2005 obtained his Bachelor of Science degree in Criminal Justice Leadership from Urbana University. In 2010 he achieved a Master of Science degree in Justice Administration from Tiffin University.

During his tenure at the Sheriff’s Office Lt. Barnhart served as a deputy sheriff in the Jail and Uniform Patrol Divisions. He was promoted to Sergeant in June of 2006. Since then he has been a Sergeant assigned to the Jail and Uniform Patrol Divisions. He was promoted to Lieutenant in July 2015 and assigned as commander of the Professional Standards Division. He also serves as an agency instructor in a wide array of disciplines to include: tourniquet application, Taser, patrol rifle and pistol firearms instructor, Narcan, OC and expandable baton.

Lt. Barnhart’s primary responsibilities include oversight of internal affairs investigations, selection and recruitment of new sworn employees and administering agency training program. He is also assist in coordination and execution of assigned grant projects.

Additionally, Lt. Barnhart has received several department awards including, Meritorious Service, Exceptional Service, 16 years Perfect Attendance and the Sheriff’s Award.

In his leisure time he enjoys reading, boating, snow skiing, mountaineering, road cycling and mountain biking.

Sergeant Denise Jones

Sergeant Denise Jones has been a resident of Clark County for most of her life. Denise attended Northwestern High School, and after graduation joined the United States Army, serving in the Ohio Army National Guard for six years.

She began her career in law enforcement in January of 2000 with the Montgomery County Sheriffs Office. Denise came to the Clark County Sheriffs Office in March of 2007. Denise attended Sinclair Community College where she obtained her Ohio Peace Officers Training Certificate and her Associates Degree in Applied Science.

Sergeant Jones has continued her education throughout her tenure at the Clark County Sheriffs Office, graduating magna cum laude with her Bachelor of Science degree in Criminal Justice Administration along with her Master of Science degree in Criminal Justice Administration and Master of Science degree in Emergency Services Management, and working on a Bachelor of Science degree in Homeland Security from Columbia Southern University.

During her career with the Clark County Sheriff’s Office she has been assigned to the Jail Division and Uniformed Patrol Division. While serving as a road patrol deputy she performed her regular patrol duties and focused on Criminal Interdiction making several drug arrests. Denise was promoted to the rank of Sergeant in 2015 and has also served as a Jail and Uniformed Patrol sergeant, and now the Professional Standards Sergeant.

Sergeant Jones has been awarded the "Best of the Best" award, Meritorious Service, and Outstanding Performance Award. Sergeant Jones has served on the Clark County Sheriffs Office Honor Guard for nine years and has served as the Honor Guard Commander.

Deputy Brandon McDuffie

Deputy McDuffie attended Kenton Ridge High School and served in the United States Marine Corps upon graduating high school. He went on to attend Clark State Community College where he received his Associates Degree in Criminal Justice. He also completed his Ohio Peace Officer Basic Training at Clark State. 

Deputy McDuffie was hired at the Sheriff’s Office in February of 2016 as a cadet in the Criminal Investigations Division. He was sworn as a Deputy in March of 2017 working in the Jail Division. Deputy McDuffie joined the Road Patrol in September of 2020 and currently serves the City of New Carlisle. He also serves as a current member of the Sheriff’s Office Special Operations Team. Deputy McDuffie has served many other various roles at the Sheriff’s Office including Field Training Officer, Firearms Instructor, Pepperball Instructor, ALERRT Instructor and weapons armorer. 

Deputy McDuffie enjoys working criminal patrol and community policing. 

Click here to e-mail Deputy McDuffie.