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SILVER SPRING, Md. (Sept. 3, 2025) Master Chief Hospital Corpsman Phillip Jean-Gilles, command master chief (CMC) of Naval Medical Research Command (NMRC), listens to remarks from Captain Guillermo “Billy” Pimentel, deputy commander, during a change of office ceremony. Immediately following remarks, Chief Gilles passed his CMC Identification Badge down to incoming CMC, Master Chief Hospital Corpsman Christopher Cariss, to represent the immediate transfer of authority. NMRC, headquarters of Navy Medicine Research & Development, is engaged in a broad spectrum of activity from basic science in the laboratory to field studies in austere and remote areas of the world to investigations in operational environments. In support of Navy, Marine Corps and joint U.S. warfighter health, readiness and lethality, researchers study infectious diseases, biological warfare detection and defense, combat casualty care, environmental health concerns, aerospace and undersea medicine, operational mission support and epidemiology. (U.S. Navy photo by Aleece Williams/Released)
SILVER SPRING, Md. (Sept. 3, 2025) Capt. Eric Welsh, commander, Naval Medical Research Command (NMRC) pins the Command Master Chief (CMC) Identification Badge on Master Chief Hospital Corpsman Christopher Cariss during a change of office ceremony, in which Cariss relieved Master Chief Hospital Corpsman Phillip Jean-Gilles as NMRC’s CMC. NMRC, headquarters of Navy Medicine Research & Development, is engaged in a broad spectrum of activity from basic science in the laboratory to field studies in austere and remote areas of the world to investigations in operational environments. In support of Navy, Marine Corps and joint U.S. warfighter health, readiness and lethality, researchers study infectious diseases, biological warfare detection and defense, combat casualty care, environmental health concerns, aerospace and undersea medicine, operational mission support and epidemiology. (U.S. Navy photo by Tommy Lamkin/Released)
SILVER SPRING, Md. (Sept. 3, 2025) Master Chief Hospital Corpsman Phillip Jean-Gilles, command master chief (CMC) of Naval Medical Research Command (NMRC), poses with his certificate of reenlistment and Lt. Sara Tuck stands along side him with a gift he presented her, following his reenlistment ceremony. Immediately following his reenlistment, Jean-Gilles relinquished his position as CMC to Master Chief Hospital Corpsman Christopher Cariss during a change of office ceremony. NMRC, headquarters of Navy Medicine Research & Development, is engaged in a broad spectrum of activity from basic science in the laboratory to field studies in austere and remote areas of the world to investigations in operational environments. In support of Navy, Marine Corps and joint U.S. warfighter health, readiness and lethality, researchers study infectious diseases, biological warfare detection and defense, combat casualty care, environmental health concerns, aerospace and undersea medicine, operational mission support and epidemiology. (U.S. Navy photo by Aleece Williams/Released)
SILVER SPRING, Md. (Sept. 3, 2025) Master Chief Hospital Corpsman Phillip Jean-Gilles, command master chief (CMC) of Naval Medical Research Command (NMRC), thanks Lt. Sara Tuck for administering his oath of reenlistment at his reenlistment ceremony. Immediately following his reenlistment, Jean-Gilles relinquished his position as CMC to Master Chief Hospital Corpsman Christoper Cariss during a change of office ceremony. NMRC, headquarters of Navy Medicine Research & Development, is engaged in a broad spectrum of activity from basic science in the laboratory to field studies in austere and remote areas of the world to investigations in operational environments. In support of Navy, Marine Corps and joint U.S. warfighter health, readiness and lethality, researchers study infectious diseases, biological warfare detection and defense, combat casualty care, environmental health concerns, aerospace and undersea medicine, operational mission support and epidemiology. (U.S. Navy photo by Aleece Williams/Released)
SILVER SPRING, Md. (Sept. 3, 2025) Master Chief Hospital Corpsman Phillip Jean-Gilles, command master chief (CMC) of Naval Medical Research Command (NMRC), recites the oath of enlistment, administered by Lt. Sara Tuck, during a reenlistment ceremony. Immediately following his reenlistment, Jean-Gilles relinquished his position as CMC to Master Chief Hospital Corpsman Christopher Cariss during a change of office ceremony. NMRC, headquarters of Navy Medicine Research & Development, is engaged in a broad spectrum of activity from basic science in the laboratory to field studies in austere and remote areas of the world to investigations in operational environments. In support of Navy, Marine Corps and joint U.S. warfighter health, readiness and lethality, researchers study infectious diseases, biological warfare detection and defense, combat casualty care, environmental health concerns, aerospace and undersea medicine, operational mission support and epidemiology. (U.S. Navy photo by Aleece Williams/Released)
SILVER SPRING, Md. (Sept. 3, 2025) Master Chief Hospital Corpsman Phillip Jean-Gilles, command master chief (CMC) of Naval Medical Research Command (NMRC), recites the oath of enlistment, administered by Lt. Sara Tuck, during a reenlistment ceremony. Immediately following his reenlistment, Jean-Gilles relinquished his position as CMC to Master Chief Hospital Corpsman Christopher Cariss during a change of office ceremony. NMRC, headquarters of Navy Medicine Research & Development, is engaged in a broad spectrum of activity from basic science in the laboratory to field studies in austere and remote areas of the world to investigations in operational environments. In support of Navy, Marine Corps and joint U.S. warfighter health, readiness and lethality, researchers study infectious diseases, biological warfare detection and defense, combat casualty care, environmental health concerns, aerospace and undersea medicine, operational mission support and epidemiology. (U.S. Navy photo by Aleece Williams/Released)
U.S. Navy Capt. Joseph Piansay, center, the deputy surgeon of III Marine Expeditionary Force, is piped ashore during his retirement ceremony at Kadena Air Base, Okinawa, Japan, Aug. 29, 2025. Piansay, a native of the Philippines, was honored for 35 years of active-duty service, beginning his career in 1990 as a corpsman at Naval Base Subic Bay, Philippines, before receiving a commission as an officer. (U.S. Marine Corps photo by Lance Cpl. Kindsey Calvert)
250821-N-FT324-8667. ROTA, SPAIN (Aug. 21, 2025) Incident command staff at Naval Medical Readiness and Training Command (NMRTC) Rota coordinate response operations during a joint mass casualty drill. The command team directed triage, treatment, and evacuation efforts, reinforcing the hospital’s role in sustaining medical readiness and supporting the warfighter mission. (U.S. Navy photo by Lt. Cmdr. Jonathan Phillips)
250821-N-FT324-7974. ROTA, SPAIN (August 21, 2025). Cmdr. Katy Reichlin, a family medicine physician assigned to U.S. Navy Medicine Readiness and Training Command (NMRTC) Rota, performs an ultrasound on a simulated casualty during a joint mass casualty training exercise. The exercise tested the medical team’s ability to provide rapid assessment and care in a high-stress environment. (U.S. Navy Photo by Hospital Corpsman 2nd Class Rigel Jamero)
250821-N-FT324-6202. ROTA, SPAIN (Aug. 21, 2025) Hospital Corpsman Third Class John Manikas and Zachary Gould, both Emergency Medical Technicians assigned to the Emergency Department at Naval Medical Readiness and Training Command (NMRTC) Rota, triage a simulated casualty on the flight line during a joint mass casualty drill. The exercise enhanced warfighter readiness by ensuring medical personnel remain prepared to respond rapidly in operational settings. (U.S. Navy photo by Communication Specialist 1st Class Drace Wilson)
250821-N-FT324-3128. ROTA, SPAIN (August 21, 2025). Clinical staff at Naval Medical Readiness and Training Command (NMRTC) Rota receive a simulated casualty during a mass casualty joint training exercise. The exercise enhanced medical warfighter readiness by sharpening clinical teams’ ability to triage, stabilize, and provide critical care in a fast-paced, operational environment. (U.S. Navy photo by Lt. Cmdr. Jonathan Phillips)
The Naval Medical Forces Development Command is always mission driven and most importantly people powered! Logistics Specialist 3rd Class Andre Metoyer with the command’s Logistics and Facilities directorate, ensures medical forces are properly equipped and focused on their mission of caring for Sailors, which ultimately strengthens the Navy’s readiness. Photo taken and graphic created at Joint Base San Antonio-Fort Sam Houston, Sept. 4, 2025 (U.S. Navy graphic by Malcolm McClendon).

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