Mont. Code Ann. § 7-33-4114

No person, corporation, partnership, or association which is authorized by any city, town, village, or district fire department or by any volunteer fire company to receive any report of fire or which agrees to receive and transmit such report to such fire department or volunteer fire company shall be liable in any civil action for damage to property or persons, including death, caused by delay in reporting or failure to report such fire unless such delay or failure is the result of the gross negligence of such person, corporation, partnership, or association.