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HDSP holds mass casualty training

September 25, 2026

High Desert State Prison (HDSP) in Susanville recently held a comprehensive mass casualty training exercise in the administrative building. The training marked the first time the facility has held this type of exercise in the admin building.

The training simulated a complex emergency involving multiple active shooters and hostage situations within the building. The exercise was designed to strengthen staff preparedness, communication, coordination and response capabilities during a critical incident.

Treating the wounded during a simulated mass casualty exercise at High Desert State Prison in Susanville, 2026. — *Medical staff and fire personnel assess and treat simulated wounds.*

Event organizers developed realistic scenarios that emphasized rapid threat response, integrated incident management, and lifesaving medical care. The exercise was conducted in coordination with California Correctional Health Care Services and incorporated the “Run, Hide, Fight” response principles along with casualty care and coordinated emergency planning.

Trainers and observers watch the exercise unfold at High Desert State Prison in Susanville, 2026.

Following the exercise, a staff debriefing discussed their experiences and identified lessons learned. Several staff members said conducting the training in a different location created a more realistic environment, changing the overall tone and dynamics of the exercise.

The training provided an important opportunity for staff and partner agencies to practice coordinated emergency response procedures in a realistic setting. They also identified areas for continued preparedness and improvement.

Submitted by Lt. J. Micone