Captain Shirley joined the Santa Monica Police Department in 1993. He was promoted to the rank of Sergeant in 1996, Lieutenant in 2002, and Captain in 2005. He has a Bachelor's degree in Sociology and a Master's in Public Administration, both from the California State University Northridge. He is a graduate of Command College for Executive Leadership, FBI National Academy, Senior Management Institute for Police, the University of Southern California's Delinquency Control Institute, Harvard University, Kennedy School Executive Education Program, Columbia University, Business School Executive Education Program, and Georgetown University, Center for Juvenile Justice Reform - Diversion Certificate Program. Captain Shirley has served as a Law Enforcement and Racial Profiling facilitator at the Museum of Tolerance.
Captain Shirley has worked a variety of assignments including the Uniformed Patrol Section, Audit and Inspection Unit, Criminal Investigations Division and the Homeless Liaison Program (HLP) prior to promoting to the rank of Sergeant. As a Sergeant, he supervised the Uniformed Patrol Division, the Gang Unit, and worked Internal Affairs. After promoting to Lieutenant, Captain Shirley managed the Internal Affairs Section and during that time, implemented the Department's first Internal Affairs case management system, and employee early warning system.
Captain Shirley has served as the commander for the Operations Division, the Strategic Services Division and currently serves as the commander for the Criminal Investigations Division. As commander of Operations, he oversaw the department's newly implemented community policing model, the Neighborhood Resource Officer program. While assigned to the Strategic Services Division, Captain Shirley chaired a task force comprised of various City departments whose mission was to enhance security in vital areas of the City.
As the Criminal Investigations Division Commander, Captain Shirley has overseen the implementation of the Department's new case management system, and the implementation of the Department's first-ever D.A.R.E. program in the Santa Monica-Malibu Unified School District's elementary schools. In 2007, Captain Shirley traveled to Israel as part of a Homeland Security law enforcement contingency to review their best practices regarding counter-terrorism philosophies, strategies, and security operations.
Prior to joining the Department, Captain Shirley gained extensive practical and administrative experience working in the social services profession in the area of juvenile delinquency. He has utilized this experience through collaboration with social services providers throughout the City involving youth violence prevention, intervention and enforcement.
Captain Shirley is involved in the community, including serving/having served on the Board of Directors for the American Red Cross, Santa Monica chapter, the Santa Monica Family YMCA, and the Santa Monica Police Activities League.