Lance Cpl. Vicente C. Spence (right), a motor transport operator with 4th Medical Battalion, 4th Marine Logistics Group, Marine Forces Reserve, receives a challenge coin from Rear Adm. Christina M. Alavarado, commander, reserve component expeditionary medicine, during Exercise Global Medic at Fort McCoy, Wisconsin, Aug. 19, 2016. Spence was presented the coin for the continuous hard work he did throughout the course of the exercise and for constantly maintaining a positive and upbeat attitude. (U.S. Marine Corps photo by Lance Cpl. Melissa Martens/Released)