Lieutenant Rob Trimble graduated from Springfield South High School/Clark County Joint Vocational School (Drafting) in 1988. In 1989, he enlisted in the United States Army and served until 1995. Lieutenant Trimble attended the Clark State Police Academy in 2001 and was granted a commission as a Special Deputy in November of that same year. Lieutenant Trimble completed his associate degree at Clark State Community College in Criminal Justice in February of 2003. He was hired full-time as a Deputy Sheriff in June of 2005, and assigned to the jail. Lieutenant Trimble was reassigned to the road in January of 2011, and then promoted to Sergeant in December of 2012. Lieutenant Trimble attended Subject Control Instructor certification through OPOTA and Instructional Skills certification in July of 2013, and began as an instructor at Clark State Community College Police Academy that same year. In 2016, Lieutenant Trimble accepted a newly created "Flex Sergeant " position, which required him to supervise both the Jail Division and the Uniform Patrol division, as staffing dictated. In 2021, Lieutenant Trimble was honored with being selected for the Clark County Special Operations Team and works hard to maintain the required qualifications to maintain that status. In April of 2023, he was promoted to the rank of Lieutenant and assumed the role of Clark County Jail Division Commander.
During His career, Lieutenant Trimble has obtained multiple instructor certifications that allow him to help train Clark County Sheriff's Office employees and Clark State College students. This training helps to ensure their safety and success. In his new role, he remains committed to training and mentoring the staff of the Clark County Sheriff's Office while making sure the Clark County Jail is providing to Care, Custody, and Control for the individuals required to be held within.