U.S. Marines participate in a medical evacuation exercise

U.S. Marines participate in a medical evacuation exercise during an iteration of the Winter Mountain Leaders Course at the Marine Corps Mountain Warfare Training Center, Calif., Feb. 12, 2019. The purpose of the Winter Mountain Leaders Course is to train ground combat arms military occupational specialties in mountain warfare tactics, techniques and procedures to serve effectively as force multipliers to their units during combat operations in complex, compartmentalized, mountainous terrain. (U.S. Marine Corps photo by Lance Cpl. Rachel K. Young-Porter)