The Department of General Services Police became an independent unit in April of 2003. Through both its Annapolis and Baltimore Detachments, the Police provide security for the Annapolis and Baltimore State Office centers. In Annapolis, the General Service Police guard 19 buildings, 5 parking garages, 11 parking lots, and demonstrations held on state property. In Baltimore, there are 11 buildings, 4 parking garages, and 6 state parking lots guarded by the General Services Police.