An U.S. Air Force 35th Security Forces Squadron military working dog and handler walk to the next obstacle during the night operations assessment of the two-day Winter Warrior Challenge at Misawa Air Base, Japan, Dec. 14, 2017. The MWD teams were evaluated on six scenarios that included locating high-value targets, searching for explosive caches, physical stress and job knowledge. (U.S. Air Force photo by Staff Sgt. Melanie Hutto)