Okla. Stat. tit. 63, § 63-683.16: Restriction on employment - Loyalty oath

No person shall be employed in any capacity in any emergency

management organization who advocates or has advocated a change by

force or violence in the constitutional form of the government of

the United States or in this state or the overthrow of any

government in the United States by force or violence, or who has

been convicted of or is under indictment or information charging any

subversive act against the United States. Each person who is

appointed to serve in an organization of emergency management shall,

before entering upon employment duties, take the Oklahoma Loyalty

Oath, in writing, before a person authorized to administer oaths in

this state.