Zycarious

Yep. You can usually see them at the entrances, but they can respond almost anywhere from off-stage (Behind the scenes).

Security does work for the Reedy Creek Improvement District, however they usually leave arresting/detainment to the ever present Sheriff's Deputies. WDW property spans two counties (Orange and Osceola) both counties always have a presence in every park. There is also a large contingent of Florida State Police on property for traffic enforcement.