Petty Officer 2nd Class Mark A. Harris, a hospital corpsman with 4th Medical Battalion, 4th Marine Logistics Group, Marine Forces Reserve, provides care to a simulated casualty in the Shock Trauma Platoon during Exercise Global Medic at Fort McCoy, Wisconsin, Aug. 19, 2016. The live scenario training will ensure that corpsman are well prepared in a combat zone and will have all the necessary capabilities to accomplish the mission. (U.S. Marine Corps photo by Lance Cpl. Melissa Martens/Released)