A German Leopard 2A6 tank fires at its target during the calibration range during Strong Europe Best Tank. U.S. Army Europe and the German Army co-host the third Strong Europe Tank Challenge at Grafenwoehr Training Area, June 3 - 8, 2018. The Strong Europe Tank Challenge is an annual training event designed to give participating nations a dynamic, productive and fun environment in which to foster military partnerships, form Soldier-level relationships, and share tactics, techniques and procedures. ( U.S. Army Photo by Kevin S. Abel)