Summary: Emergency units responded to a serious motor vehicle accident involving a head-on collision between two vehicles, including a possible medical transport vehicle, near 11529 New Mexico 337 in Bernalillo County, New Mexico. The incident resulted in four patients, with one confirmed fatality and three others sustaining significant injuries. The event escalated from an initial injury report to a high-velocity impact, prompting an upgrade in response and the dispatch of multiple fire, rescue, and command units. The situation required coordinated triage, patient transport, and ongoing scene management.