N.D. Cent. Code § 37-01-04
In case of insurrection, invasion, tumult, riot, breach of the peace, cyber attack, or imminent danger thereof, to provide a presence at state ceremonial events, to provide assistance to political entities in search and rescue efforts or to respond to a potential natural or environmental hazard or nuisance, or to perform training activities, the governor may order into the active service of this state any part of the national guard that the governor may deem proper. When the national guard of this state, or a part thereof, is called forth under the Constitution of the United States and the laws of the United States, the governor shall order out for service the remaining troops or such part thereof as may be necessary. If the number of available troops is insufficient, the governor shall order out such part of the reserve militia as the governor may deem necessary.
N.D.C.C. § 37-01-04