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Naval Hospital Jacksonville Hospital Corpsman 3rd Class Konstantin Lukianeko poses with his certificate of U.S. citizenship following a ceremony at the Jacksonville U.S. Citizenship and Immigration Services office, July 21. Lukianeko joined the Navy four and half years ago to assist him in his citizenship journey and for financial stability after leaving Russia. (Courtesy photo)
Naval Hospital Jacksonville Hospital Corpsman 3rd Class Konstantin Lukianeko listens for information while serving as a recording during the Expeditionary Medicine Sustainment Training exercise, July 31. Lukianeko recently obtained his U.S. citizenship after serving four and half years in the Navy. (U.S. Navy photo by Julie M. Lucas)
Navy Fire and Emergency Services personnel and emergency medical responders triage and treat simulated casualties during Exercise Citadel Rumble at Naval Air Weapons Station China Lake, California, July 30, 2026. Navy Medicine Readiness and Training Unit China Lake supported the mass-casualty exercise by providing hospital corpsmen as role players, supporting exercise safety and training, and preparing Branch Health Clinic China Lake to receive simulated patients. The exercise tested the installation’s emergency response capabilities and strengthened coordination among military and civilian emergency response partners. (Courtesy photo).
BRIDGEPORT, Calif. (Dec. 10, 2021) Principal investigators Douglas Jones (left) and Timothy Dunn (right) of Naval Health Research Center evaluate dashboard numbers of the spirometer monitors while Jones is outfitted with a metabolic mask. The spirometer monitors breathing patterns, allowing for observation into the effects of high altitude. NHRC, part of Navy Medicine Research & Development, supports Navy, Marine Corps, and joint U.S. warfighter readiness and lethality with research and development that delivers high-value, high-impact solutions to the health challenges the U.S. military population faces on the battlefield, at sea, at home, and abroad. (U.S. Navy courtesy photo/Released)
BRIDGEPORT, Calif. (Feb. 23, 2026) Military medical students, enrolled in marine Corps Mountain Warfare Center’s Mountain Medicine course, participate in Naval Health Research Center’s (NHRC) cold-water immersion study, co-led by principal investigator, Timothy Dunn. Through its cold-water immersion studies, NHRC develops life-saving strategies that enable the warfighter to overcome the initial, lethal shock of entering frigid water. NHRC, part of Navy Medicine Research & Development, supports Navy, Marine Corps, and joint U.S. warfighter readiness and lethality with research and development that delivers high-value, high-impact solutions to the health challenges the U.S. military population faces on the battlefield, at sea, at home, and abroad. (U.S. Navy courtesy photo/Released)
SAN DIEGO (Aug. 12, 2026) Timothy Dunn of Naval Health Research Center (NHRC) is the recipient of the 2026 G. Dennis White Early Career Human Systems Integration (HSI) Practitioner Award. Dunn’s contributions and unwavering commitment embody the essential qualities that are critical to the advancement of the HSI discipline, ensuring the safety and effectiveness of systems delivered to our warfighters. The award was presented by Capt. Kellie McMullen, commanding officer, NHRC, joined virtually by Dave Tremper from Research, Development, Test and Engineering. NHRC, part of Navy Medicine Research & Development, supports Navy, Marine Corps, and joint U.S. warfighter readiness and lethality with research and development that delivers high-value, high-impact solutions to the health challenges the U.S. military population faces on the battlefield, at sea, at home, and abroad. (U.S. Navy photo by Matthew Reyes/Released)
SAN DIEGO (Aug. 7, 2026) Acting Surgeon General and chief, U.S. Navy Bureau of Medicine and Surgery, Rear Adm. Matthew Case returns to Naval Health Research Center (NHRC) to meet with Navy officers and researchers. NHRC, part of Navy Medicine Research & Development, supports Navy, Marine Corps and joint U.S. warfighter health readiness and lethality with research and development that delivers high-value, high-impact solutions to the health and readiness challenges that the U.S. military population faces on the battlefield, at-sea, home and abroad. (U.S. Navy photo by Danielle Cazarez/Released)
SAN DIEGO (Aug. 7, 2026) Acting Surgeon General and chief, U.S. Navy Bureau of Medicine and Surgery, Rear Adm. Matthew Case (right) presents a command coin to Cmdr. Ryan Smith, operational health director (left) at Naval Health Research Center (NHRC). NHRC, part of Navy Medicine Research & Development, supports Navy, Marine Corps and joint U.S. warfighter health readiness and lethality with research and development that delivers high-value, high-impact solutions to the health and readiness challenges that the U.S. military population faces on the battlefield, at-sea, home and abroad. (U.S. Navy photo by Danielle Cazarez/Released)
Officers and Sailors assigned to Navy Medical Readiness and Training Command Bethesda, apply their medical knowledge in a simulated medical emergency during the Tactical Combat Casualty Care Tier Four course testing at Walter Reed National Military Medical Center, July 30, 2026. Unlike lower TCCC tiers that focus on basic and intermediate life-saving skills for standard service members and combat medics, Tier 4 is reserved strictly for advanced medical professionals, including physicians, physician assistants, nurse practitioners, and independent duty corpsmen. NMRTC Bethesda’s mission is to maximize warfighter performance through optimized medical readiness tailored to operational requirements; enhance the readiness of the medical force to sustain expeditionary medical capability; and train and develop the Navy Medicine Force. (U.S. Navy photo by Mass Communication Specialist Second Class Alec Kramer)
U.S. Navy Rear Adm. Guido Valdez, medical officer of the Marine Corps, addresses U.S. Navy Hospital Corpsman 3rd Class Hailey Arp during a visit to Naval Branch Health Clinic Marine Corps Recruit Depot San Diego, Aug. 14. Valdez presented Arp with a Navy and Marine Corps Achievement Medal for decisive actions that helped save the life of a Marine recruit during a field training event. NBHC MCRDSD is a branch of Naval Medical Center San Diego. NMCSD employs more than 5,500 active-duty military personnel, civilians, and contractors in southern California to deliver exceptional care afloat and ashore. (U.S. Marine Corps photo by Lance Cpl. Janell B. Valerio Alvarez)
U.S. Navy Rear Adm. Guido Valdez, medical officer of the Marine Corps, presents a Navy and Marine Corps Achievement Medal to U.S. Navy Hospital Corpsman 3rd Class Hailey Arp during a visit to Naval Branch Health Clinic Marine Corps Recruit Depot San Diego, Aug. 14. NBHC MCRDSD is a branch of Naval Medical Center San Diego. NMCSD employs more than 5,500 active-duty military personnel, civilians, and contractors in southern California to deliver exceptional care afloat and ashore. (U.S. Marine Corps photo by Lance Cpl. Janell B. Valerio Alvarez)
U.S. Navy Rear Adm. Guido Valdez, medical officer of the Marine Corps, interacts with Sailors and staff during a visit to Naval Branch Health Clinic Marine Corps Recruit Depot San Diego, Aug. 14. NBHC MCRDSD is a branch of Naval Medical Center San Diego. NMCSD employs more than 5,500 active-duty military personnel, civilians, and contractors in southern California to deliver exceptional care afloat and ashore. (U.S. Marine Corps photo by Lance Cpl. Janell B. Valerio Alvarez)

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