Same thing as a CSO, except for a Park District.

http://www.threeriversparkdistrict.org/3R_jobs/Jobs_listing.cfm?CAT_ID=1&job_id=50

Mind you, they have nothing on their belts and have amber lightbars ;) Tehe. The district is an awesome place and if I were old enough, i'd apply! Great team! The Park District also has it's own Police Department and like to hire from within.