PALAU (June 5, 2022) U.S. Navy Lt. Cmdr. Kelly Peng, left, an Emergency Room Doctor and Hospital Corpsmen 2nd Class Nicolas Montes with Combat Logistics Battalion 15, Combat Logistics Regiment 17, 1st Marine Logistics Group, treat a simulated casualty during a mass casualty training event in support of Valiant Shield 2022 on Palau, June 4, 2022. Mass casualty drills test the corpsmens ability to treat and stabilize large numbers of casualties with various wounds. (U.S. Marine Corps photo by Lance Cpl. Bradley Ahrens)