NAPA COUNTY, CA — On March 7, the Napa County Office of Emergency Services (OES) will conduct a full-scale mass casualty drill in collaboration with various local, state, and federal agencies. The exercise, designed to simulate an explosion at the 2025 Napa High School graduation, aims to test emergency response protocols and coordination among multiple agencies in a crisis situation.
The “i-MCI Full-Scale Exercise” will involve over 50 simulated casualties and is expected to challenge first responders, including local law enforcement, fire departments, emergency medical services (EMS), and federal partners. The scenario will require immediate, coordinated action from all participating agencies, including the transportation of patients to regional medical facilities.
The drill’s primary objectives are to enhance the interoperability of emergency services, refine operational procedures, and improve communication systems in the event of a real mass casualty incident. With over 16 agencies participating, the exercise is designed to provide valuable insights into emergency response processes, ensuring that agencies are prepared to efficiently handle large-scale emergencies.
Michael Marsh of Marsh EMS Consulting emphasized the importance of such exercises, stating, “This exercise is critical in ensuring our emergency response agencies are fully prepared to handle mass casualty incidents efficiently and effectively. Interoperability and coordination among allied agencies are essential in large-scale emergencies, and this drill provides a vital opportunity to enhance our preparedness.”
The exercise is set to take place during daytime hours at several clearly marked locations throughout Napa. Local officials have cautioned residents to avoid designated drill zones to prevent any disruptions or confusion. Temporary closures and delays may occur as a result of the exercise, but officials have reassured the public that these measures are essential for the training.
Among the agencies involved in the drill are the Napa County Office of Emergency Services, the Napa County Sheriff’s Office, Napa City Police Department, Napa City Fire Department, Napa County Fire Department, California Emergency Medical Services Authority (CA EMSA), and the Federal Bureau of Investigation (FBI). Additionally, medical and law enforcement partners from neighboring counties, including Alameda County EMS, will participate to provide mutual aid.
The Napa County OES, in coordination with its partners, hopes that the exercise will not only enhance emergency preparedness but also foster stronger collaboration across jurisdictions and agencies in the region. Through such realistic drills, Napa County continues to ensure that first responders are ready to address even the most challenging emergencies.
For residents, the exercise is a reminder of the importance of emergency preparedness and the dedication of local agencies in keeping the community safe.