U.S. Army Sgt. Matthew Conrad, right, a section chief

U.S. Army Sgt. Matthew Conrad, right, a section chief with Bravo Battery, 5th Battalion, 25th Field Artillery Regiment, 4th Brigade Combat Team, 10th Mountain Division, shows Afghan National Army (ANA) soldiers with 4th Battalion, 3rd Brigade, 201st Corps, how to adjust the aim on a D-30 122 mm howitzer at Forward Operating Base Tagab, Kapisa province, Afghanistan, Sept. 3, 2013. U.S. Soldiers advised, instructed and certified ANA artillery soldiers on the proper handling of D-30s, a Soviet-made heavy artillery weapon capable of engaging targets more than 15 kilometers away. (U.S. Army National Guard photo by Sgt. Margaret Taylor/Released)