CAMP COURTNEY, Okinawa (April 9, 2021) U.S. Navy hospital corpsmen with 3rd Marine Division administer care to simulated casualties during Medical Exercise 21.1 on Camp Courtney, Okinawa, Japan, April 9, 2021. MEDEX 21.1 developed the prolonged field care capabilities of medical personnel from 3rd Marine Division in a dispersed environment. (U.S. Marine Corps photo by Lance Cpl. Diana Jimenez)