Delaware State Police Superintendent Col. Nathaniel McQueen Jr. announced the promotion of Capt. Matthew Cox to the rank of major Sept. 22.

Cox was appointed Jan. 26, 1990, as a trooper recruit to the 60th DSP Academy Class. Upon completion of his academy training, he was assigned to Troop 6, Prices Corner for the Field Training Officer program. After his promotion to corporal grade 1 on Jan. 26, 1998, he was assigned to Troop 1-A in the Fatal Accident Investigation Reconstruction Unit. He was promoted to sergeant Aug. 1, 2001, and later assumed the role of the officer in charge of the FAIR Team Unit. This unit was later renamed the Collision Reconstruction Unit on April 11, 2006. In September 2010, he was promoted to lieutenant and assigned to Troop 2 patrol.

Five years later he was transferred to the Headquarters Traffic Operations Section as the deputy director. After being promoted to the rank of captain Jan. 22, 2017, he continued his service in this unit as the director of the Traffic Operations Section. During the same year, he was assigned to Troop 6 as the troop commander in charge of criminal and patrol operations. He was transferred to the Office of Professional Responsibility on May 12 and served as the director.

Cox has served in many leadership roles during his career and brings knowledge, work ethic and unique skill sets. He has a Bachelor of Science in biology with a chemistry minor from Salisbury University. He is currently the officer in charge of the Delaware State Police Pipes and Drums.