Spc. Chengjie Liu (right), fires an AT-4 anti-tank weapon as Sgt. Jacob Saccameno, both infantrymen assigned to Headquarters and Headquarters Troop, 3rd Squadron, 2nd Cavalry Regiment, supervises and assists during an anti-tank and air defense artillery range, April 23, at Adazi Military Base, Latvia. American and Latvian soldiers trained using a variety of weapons, including Javelin anti-tank missiles, Carl Gustav recoilless anti-tank rifles and the RBS-70 Short-range air defense laser guided missile system. Soldiers from five North Atlantic Treaty Organization nations, including Canada, Germany and Lithuania, have been conducting a variety of training together during Summer Shield XIII, an annual two-week long interoperability training event in Latvia. (U.S. Army photo by Sgt. Paige Behringer)