Chief Mark Arnold began his career in law enforcement with the Mount Pleasant Police Department as a patrol officer in 1995. He was promoted to detective in 1997 and to corporal in 2001. From 2003 through 2013, over the course of his tenure as sergeant, Chief Arnold acquired a large breadth of knowledge as supervisor of the Criminal Investigations Bureau and Patrol Bureau. He held the position of Career Development Supervisor where he developed and conducted training programs consistent with national, state, and departmental standards. More recently, Chief Arnold served as the accreditation manager for the Police Department, which is nationally accredited through the Commission on Accreditation for Law Enforcement Agencies. Chief Arnold was promoted to Lieutenant in 2013 and supervised the Office of Professional Standards. A year later, he was promoted to the rank of Captain and managed the Field Operations Bureau and the Support Services Bureau. He was promoted to Deputy Chief in July 2020 and Chief of Police in May of 2021. Chief Arnold holds a Bachelor of Arts in Political Science from the Citadel and a Master of Science in Criminal Justice from Charleston Southern University. His specialized education and training include graduation from Department of Homeland Security Leadership Academy and the Southern Police Institute Administrative Officers Course through the University of Louisville.