The Santa Ana Police Department Mounted Unit Enforcement Detail was created in 1990 as a volunteer unit. It is now comprised of 11 sworn members and one civilian volunteer. The officers attend the 40 Hour Mounted Enforcement School, provide their own horse, and trains together once a month.
The Mounted Unit may be deployed whenever large groups have gathered for special events for crowd management. The unit is also a valuable resource for high-profile crime suppression in targeted areas, such as city parks and large shopping centers.