U.S. Army Sgt. 1st Class John Adkerson, left, teaches Ukrainian soldiers how to determine grid coordinates and points on a map during a map reading and land navigation class at the International Peacekeeping and Security Center near Yavoriv, Ukraine, March 5, 2016. Adkerson is a combat engineer assigned to the 3rd Infantry Division’s 3rd Battalion, 15th Infantry Regiment, 2nd Infantry Brigade Combat Team. Army photo by Staff Sgt. Adriana M. Diaz-Brown