The Commander-in-Chief or, in his or her absence, the Lieutenant Governor, or, in the absence of both, the Adjutant and Inspector General, in case of riot, rebellion, or insurrection within the State, or in case of great opposition to the service of legal process, whether civil or criminal, or in case of invasion or imminent danger thereof, or in case of disaster, or emergency proclaimed by the Governor, may call out the National Guard, or such parts of the National Guard as he or she deems necessary, and may order this force into camp for instruction and drill. Until discharged by order of the Commander-in-Chief, the force shall be subject to his or her order and shall be governed by the regulations prescribed for the U.S. Army; and the Commander-in-Chief may order the same into camp for instruction and drill when in his or her judgment the interests of the State require. (Amended 1969, No. 261 (Adj. Sess.), § 1, eff. April 7, 1970; 1973, No. 223 (Adj. Sess.), § 7, eff. April 4, 1974; 2017, No. 113 (Adj. Sess.), § 120.)