A U.S. Soldier with Alpha Battery, 4th Battalion, 319th Field Artillery Regiment, 173rd Airborne Brigade Combat Team helps replace a tire on an M119A2 105 mm howitzer at the Joint Multinational Readiness Center in Hohenfels, Germany, Sept. 3, 2014, during exercise Saber Junction 2014. Saber Junction is a U.S. Army Europe-led exercise designed to prepare U.S., NATO and international partner forces for unified land operations.