NMRTU China Lake bolsters installation readiness at Exercise Citadel Rumble

DVIDS – News – NMRTU China Lake bolsters installation readiness at Exercise Citadel Rumble

NMRTU China Lake bolsters installation readiness at Exercise Citadel Rumble

CHINA LAKE, CALIFORNIA, UNITED STATES

08.19.2026

Story by Christopher Jones 

Naval Hospital Twentynine Palms

CHINA LAKE, Calif. — An aircraft crashes aboard Naval Air Weapons Station (NAWS) China Lake, triggering structural fires and a building collapse. Casualties require immediate triage and treatment as fire, security and medical personnel converge on the scene. Some patients need rapid transport to regional hospitals, while others require medical supervision as emergency departments preserve capacity for the most seriously injured

The scenario was simulated, but the challenges facing responders were designed to reflect those they could encounter during a real mass-casualty incident

Navy Medicine Readiness and Training Unit (NMRTU) China Lake joined installation emergency responders and community partners July 30 for Citadel Rumble, a mass-casualty exercise designed to test NAWS China Lake’s ability to respond to a complex emergency while strengthening coordination among the military and civilian organizations that would respond to a real-world crisis

Citadel Rumble tested the installation’s emergency management plans, antiterrorism and force protection measures, pre-planned responses and standard operating procedures while exercising relationships between installation organizations and community emergency re

For NMRTU China Lake, the exercise provided an opportunity to validate a mission that extends beyond the routine care delivered each day at Branch Health Clinic China Lake. During an installation emergency, the clinic becomes part of a broader casualty response network responsible for supporting triage, treating and holding minor casualties, tracking patients and coordinating with emergency responders and regional medical facilities

“Exercise Citadel Rumble successfully validated the clinic’s integration into the installation’s pre-planned responses and emergency management plans, confirming our critical role in base-wide emergency operations,” said Senior Chief Hospital Corpsman Allenjane M. Natividad, who serves as NMRTU China Lake’s senior enlisted leader

The unit’s leadership was involved before the first simulated casualty ever reached responders. NMRTU China Lake’s officer in charge, Lt. Cmdr. Alex Stulo, and Natividad assisted with the development, coordination and execution of the exercise, helping ensure medical considerations were incorporated into the scenario and response plan

During the exercise, the unit provided 10 hospital corpsmen to serve as role players portraying casualties, while personnel also supported the exercise’s safety and training team. Five high-fidelity manikins were incorporated into the scenario, and two moulage personnel applied realistic simulated injuries to help recreate the conditions responders could encounter following a major accident

The combination provided fire, emergency medical and other responding personnel with casualties of varying types and severity, requiring them to assess the scene, establish priorities and make treatment and transportation decisions in a high-stress environment

At the same time, the clinic prepared to perform the role it would assume during an actual mass-casualty response by receiving and caring for patients categorized as “green,” or those with minor injuries

That capability can become particularly important during a large-scale emergency, Natividad said, because keeping minor casualties in a medically supervised, temperature-controlled environment at the clinic can help preserve limited regional emergency department re

In a real incident, NMRTU China Lake would receive notification of a mass-casualty event through the installation’s emergency operations structure. Clinic personnel could then integrate with Federal Fire personnel supporting initial triage as needed while simultaneously preparing the clinic to receive casualties

As the response progresses, the clinic’s responsibilities would extend beyond direct patient care

NMRTU China Lake would help track casualties throughout the response and coordinate with Federal Fire, Ridgecrest Regional Hospital and other partners to maintain awareness of where patients have been sent and where additional medical capacity is available. Critical casualties requiring higher levels of care could be routed to regional medical facilities, including facilities in Fort Irwin, Lancaster and Victorville

That coordination is especially important at China Lake, where geography can complicate an already difficult emergency response. The installation’s location means a major incident may require responders to rely on a geographically dispersed network of military and civilian medical re

Citadel Rumble tested that network

The exercise brought NMRTU China Lake together with installation emergency responders and community partners, including Navy Fire and Emergency Services, Ridgecrest Regional Hospital and Liberty Air and Ambulance services. Their participation allowed the installation to exercise mutual aid relationships that could become essential during a real emergency

For clinic personnel, operating within that system requires more than medical proficiency. A complex mass-casualty event can produce multiple hazards simultaneously while creating an immediate demand for accurate communication among organizations operating at different locations

In the exercise scenario, an aircraft crash resulted in structural fires and a building collapse, creating a potentially unstable environment for responders attempting to locate, triage and treat casualties

Natividad said maintaining responder safety in that type of multi-hazard environment is one of the primary challenges clinic personnel must be prepared to confront

Citadel Rumble gave Sailors the opportunity to practice operating alongside Federal Fire personnel while maintaining safety awareness and ensuring medical personnel and role players did not become additional casualties

The exercise also reinforced another challenge that can become increasingly difficult as the number of patients and responding organizations grows: maintaining a common operating picture of casualty locations

One of the most significant lessons identified during Citadel Rumble was the need to further strengthen casualty-tracking synchronization among the emergency operations center, NMRTU China Lake and Ridgecrest Regional Hospital

During a real mass-casualty incident, information can change rapidly as patients move from the scene to the clinic, local hospitals or other regional medical facilities. Ensuring each organization has the same information about patient locations is particularly important during the first hour of a response

The exercise highlighted the importance of maintaining an identical, real-time casualty picture among responding organizations to reduce communication gaps and support decisions about where patients should be routed.
While the exercise identified an area for continued improvement, it also demonstrated the clinic’s ability to mobilize personnel, coordinate with civilian medical partners and provide safety support as part of a larger installation response

The training carried additional significance because it was the first major mass-casualty exercise of its kind at the installation in approximately three years

During that time, personnel throughout the organizations responsible for emergency response have changed. Many of the Sailors currently assigned to NMRTU China Lake and personnel working within the emergency operations center had never executed the installation’s emergency management plans and pre-planned responses together during a mass-casualty exercise

For Natividad, seeing those organizations restore that coordination was one of the most important outcomes of Citadel Rumble

“The most significant takeaway was watching the EOC (emergency operations center), clinic and mutual aid partners successfully reintegrate their joint communication and casualty-tracking operations after a three-year gap between major mass-casualty exercises,” Natividad said

The exercise moved those plans from documents and briefings into an environment where personnel had to execute them under pressure

“This drill was absolutely vital to familiarize new staff with the sheer speed and chaos of a real-life crisis, transforming theoretical plans into applied, tactical readiness,” Natividad said

The training allowed personnel to better understand how their individual responsibilities connect the clinic with emergency responders, the emergency operations center and civilian hospitals throughout a mass-casualty response

“By actively rehearsing the scenario, the clinic relearned how to effectively execute its support role,” Natividad said. “Rebuilding this joint interoperability ensures that if a real tragedy strikes today, the installation will respond with coordinated precision rather than confusion.”

Participating in Citadel Rumble also prepares clinic Sailors for medical requirements beyond the installation. Operating within the EOC and Incident Command System builds experience applicable to larger joint-force medical commands and interagency task forces, while working alongside fire, security and civilian partners strengthens interoperability

“Training clinic staff to execute base emergency plans builds a dual-capable force,” Natividad said. “Sailors learn how to transition the clinic from routine outpatient care to an expeditionary triage node, aligning local installation security priorities with forward-deployed medical readiness requirements.”

Navy Medicine Readiness and Training Unit China Lake is a subordinate unit of Navy Medicine Readiness and Training Command Twentynine Palms. NMRTC Twentynine Palms supports Navy and Marine Corps lethality by ensuring warfighters are deployment ready and delivering a medically ready, fit-to-fight force prepared to meet operational requirements

Navy Medicine’s 44,000+ talented and ready forces optimize health readiness, deliver quality healthcare, and provide global expeditionary medical support to warfighters

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