(1) "Employ," when used in the context of the relationship between a law enforcement agency and a police officer, includes the assignment of law enforcement duties on a volunteer basis to a reserve officer.
(2) "Law enforcement agency" means the Department of State Police, the Department of Justice, a district attorney, a political subdivision of the State of Oregon, a municipal corporation of the State of Oregon, a tribal government and a university, that maintains a law enforcement unit as defined in ORS 181A.355 (12)(a)(A).
(3) "Police officer" means a person who is:
(a) A police officer or reserve officer as defined in ORS 181A.355; and
(b) Employed by a law enforcement agency to enforce the criminal laws of this state.
(4) "Tribal government" means a tribal government as defined in ORS 181A.680:
(a) With land that is contiguous to the county in which the deadly physical force planning authority is created; and
(b) That has adopted the provision of tribal law described in ORS 181A.685 (4)(d)(A). [Formerly 181.781]