Army Pvt. Daniel Nieves carries a propellant charge for a M777 howitzers during exercise Dynamic Front 18 at the 7th Army Training Command's Grafenwoehr Training Area, Germany, March 8, 2018. Nieves is assigned to A Battery, Field Artillery Squadron, 2nd Cavalry Regiment. Dynamic Front is an annual U.S. Army Europe exercise focused on the interoperability of U.S. Army, joint service and allied nation artillery and fire support in a multinational environment. Regiment. Army photo by Gertrud Zach