N.M. Stat. § 12-10-8
Any person owning or controlling real estate or other premises who voluntarily and without compensation grants a license or privilege or otherwise permits the designation or use of the whole or any part of the person's real estate or premises for the purpose of sheltering persons during an actual or impending enemy attack or other disaster shall, together with the person's successors in interest, if any, not be civilly liable for negligently causing the death of or injury to any person on or about the real estate or premises or for the loss of or damage to the property of such person, providing the premises have been approved either in whole or in part by the proper all hazard emergency management authorities for such purpose.
NMS § 12-10-8