Brad Shannon began his career with the El Paso County Sheriff’s Office in April of 1987, and served as a Patrol deputy for the first four years of his career. In February 1991, he transferred to the Investigations Division where he served as a Detective for the next seven years of his career. During his tenure in Investigations, he investigated property crimes, sex crimes against children and homicide cases. In 1996, he was selected to become a Bomb Technician for the Colorado Springs Metro Explosives Unit. He continued to serve the Office as a Bomb Technician until he resigned from the Unit in 2008.
In March 1998, he was promoted to the rank of Sergeant and returned to the Patrol Division. After two months, Sergeant Shannon was transferred back to the Investigations Division and assigned to supervise the Major Crimes Unit. During his assignment to the Investigations Division, Sergeant Shannon was involved in the investigation of approximately 60-70 homicide cases with a clearance rate in excess of 90 percent. He served as the Major Crimes Sergeant until he was promoted to the rank of Lieutenant in June 2001. Upon being promoted to Lieutenant he returned to the Patrol Division where he served as a shift supervisor for the Division. He served in this capacity until being promoted to the rank of Commander in January 2004. After being promoted, he was assigned as the Commander of the Investigations Division where he served until February 2007. During this assignment, Commander Shannon coordinated the Robert Browne serial murder investigation, which received national media attention in July 2006. This investigation lead to the arrest and conviction of Mr. Browne for the 1987 murder of Rocio Sperry in Colorado Springs. Mr. Browne claimed to be responsible for the murder of forty-six other victims in numerous states across the country.
In February 2007, he was then assigned to the Detention Operations Division, where he supervised in excess of one hundred personnel supporting the Intake and Release Section, as well as the Court Services operations. In March 2008, Commander Shannon attended the 233rd Session of the FBI National Academy in Quantico, VA. He graduated from the National Academy in June 2008. In September of 2009, Commander Shannon was transferred to the Support Operations Division where he served until his retirement in January 2014.
Upon his return to the Sheriff’s Office on January 1, 2015, former Commander Shannon was promoted to Bureau Chief of the Law Enforcement Bureau. On August 3, 2020, Chief Shannon was transferred to the Detention Bureau.