In a devastating incident in Mountainair, New Mexico, three individuals have died following exposure to an unknown substance. Authorities reported that 18 first responders have also been hospitalized, with several undergoing decontamination procedures after responding to an emergency call. The situation was initially treated as a hazardous materials incident, and further investigations are underway to determine the nature of the substance involved. Emergency personnel continue to monitor the health status of the responders and others who may have been exposed.