Mont. Code § 10-3-504
The emergency resources management plan must provide an emergency organization and emergency administrative policies and procedures for the conservation, allocation, distribution, and use of essential resources available to the state following a civil defense emergency such as an attack upon the United States. The plan is supplemental to the national plan for emergency preparedness adopted by the president of the United States and becomes operative upon the establishment of a civil defense emergency. To the extent that the federal government is either incapable of or not prepared to conduct its emergency resources management program, the state emergency resources management plan will substitute for and replace the federal program until the time that the federal program becomes effective in the state.
§ 10-3-504, MCA