U.S. Marine Corps Cpl. Monserate Nieves III, left,

U.S. Marine Corps Cpl. Monserate Nieves III, left, and Lance Cpl. Jonathan Granillo with Headquarters Battery, 5th Battalion, 11th Marine Regiment, 1st Marine Division, carry a litter during a simulated casualty evacuation in support of Fire Exercise (FIREX) 2-18 at Marine Corps Base Camp Pendleton, Calif., April 21, 2018. FIREX 2-18 was a battalion level exercise designed to improve internal standard operating procedures and allow multiple batteries to train together. (U.S. Marine Corps photo by Lance Cpl. Alexa M. Hernandez)