Oregon Revised Statutes Counties and County Officers § 206.050

(1) When an officer finds, or has reason to apprehend, that resistance will be made to the execution or service of any process, order or paper delivered to the officer for execution or service, and authorized by law, the officer may command as many adult inhabitants of the county of the officer as the officer may think proper and necessary to assist the officer in overcoming the resistance, and if necessary, in seizing, arresting and confining the resisters and their aiders and abettors, to be punished according to law.

(2) National Guard members are exempt from any service commanded under subsection (1) of this section while they continue to be active members.