A German army Leopard 2A4 tank of the German Army Combat

A German army Leopard 2A4 tank of the German Army Combat Training Center (GACTC) maneuvers around trees and followed by a U.S. Army M3 Bradley fighting vehicle of Alpha Company, 3rd Battalion, 69th Armor Regiment, while conducting a water obstacle with opposing forces scenario during exercise Letzlingen Freedom Shock at the GACTC in Letzlingen, Germany, April 25, 2015. Exercise Letzlingen Freedom Shock promotes interoperability between the German and American training organizations while highlighting U.S. Army Europe's rapid deployment capabilities. (U.S. Army photo by Sgt. Ian Schell/Released)