Sergeant Kevin Diehl began his career in public service in 1991 by enlisting in the United States Marine Corps. While in the Marines, Sergeant Diehl was in the Marine Security Forces and was responsible for securing American assets and conducting maritime counter-terrorism measures. Upon completion of his enlistment, Sergeant Diehl accepted a position as a police officer with Georgia Ports Authority and attended the Police Academy in Savannah Georgia. While at the Georgia Ports Authority, Sergeant Diehl was a member of several anti-terrorism task forces with the United States Customs and Border Protection Services and Department of Homeland Security. Sergeant Diehl served in the following capacities while at the Georgia Ports Authority Police Department: Patrol Officer, Field Training Officer, Patrol Sergeant, Watch Commander, and Honor Guard Team Leader.
In 2007, Sergeant Diehl accepted a position with the Southlake Police Department in Southlake Texas and served in the following capacities: Patrol Officer and Field Training Officer. In 2009, Sergeant Diehl was promoted to Corporal and completed the 100th School of Police Supervision at the Institute for Law Enforcement Administration. While a Patrol Corporal, Sergeant Diehl was recognized by MADD for his efforts in DWI enforcement and made numerous DWI arrests.
In 2013, Sergeant Diehl was promoted to Sergeant and took over a night shift patrol unit. While in patrol, Sergeant Diehl was awarded the agency’s first supervisor of the year award and took over the DWI program. He also became a Standardized Field Sobriety Testing (SFST) Instructor, Advanced Roadside Impaired Driving Enforcement (ARIDE) program manager, and Breath Test Operator responsible for managing the department’s DWI program and providing training to his agency as well as other agencies in the Dallas / Fort Worth Metroplex. That same year, MADD again recognized Sergeant Diehl for courtroom testimony in DWI cases and working with prosecutors to re-structure his department’s reporting process reducing overtime and increasing DWI arrest activity and prosecution by 75%. Sergeant Diehl also became a Taser Instructor and was responsible for conducting his agencies initial and annual certification training.
In 2014, Sergeant Diehl was transferred to the Professional Standards Division and took over the Internal Affairs unit. Sergeant Diehl has conducted several investigations within his department and successfully guided the agency through a national re-accreditation process (CALEA) assisting to earn the agency a gold standard CALEA accreditation with excellence. In his role in Professional Standards, Sergeant Diehl is responsible for conducting Internal Affairs investigations for both the police and the fire department, supervising background investigations, Photo-Enforcement Program, Community Initiatives, Records Division, and Accreditation. He is also the Terminal Agency Coordinator (TAC) for TCIC/NCIC, manages the STEP program, and is responsible for planning and research for his agency. Sergeant Diehl is a Police Professionalism, Background Investigations, Internal Affairs, and Police Ethics Instructor.
Sergeant Diehl holds a Bachelor of Science in Criminal Justice Administration with a certificate in Criminal Justice Management (BSCJA/CJM) from the University of Phoenix and is currently working on a Master of Public Administration (MPA) also with the University of Phoenix. Sergeant Diehl is an adjunct instructor at the Tarrant County College Basic Police Academy as well as the North Central Texas Council of Governments (NCTCOG) Basic Police Academy instructing new officers in Internal Affairs, Police Professionalism and Ethics, SFST / DWI enforcement, and Taser. He also conducts in-service training on Background Investigations, Internal Affairs, Taser, and SFST/DWI Enforcement.