Okla. Stat. tit. 63, § 63-2804: Services included in system

Every system may include police, fire fighting and emergency

medical and ambulance services, and may include other emergency

services, in the discretion of the affected public agency, such as

poison control services, suicide prevention services and emergency

management services. The system may incorporate a private ambulance

service. In those areas in which a public safety agency of the

state provides such emergency services, the system may include such

public safety agencies.