Cal. Mil. & Vet. Code § 142

The Governor may order the active militia or any portion thereof to perform military duty of every description, including necessary administrative duties, and to participate in small arms gunnery competitions in this State or in any other state or territory or the District of Columbia, or in any fort, camp, or reservation of the United States. He may also authorize the performance of military duty or participation in small arms or gunnery competitions by any part of the active militia anywhere without the State or without the United States. Cruise duty ordered for the Naval Militia may be required to be performed on United States vessels.