U.S. Soldiers, assigned to Delta Company “Dark Knights," 3rd Combined Arms Battalion, 69th Armor Regiment, 1st Armor Brigade Combat Team, 3rd Infantry Division, fire the gun of a M1A2 SEP V2 Abrams Main Battle Tank, part of the European Activity Set, during a combined arms live-fire exercise, which concludes exercise Combined Resolve IV at the 7th Army Joint Multinational Training Command's Grafenwoehr Training Area, Germany, June 25, 2015. Combined Resolve IV is a U.S. Army Europe-led, multinational exercise designed to train the U.S. Army's European Rotational Force - the 1st Armored Brigade Combat Team, 3rd Infantry Division - alongside more than 4,700 allies and partners from 13 European countries as part of a decisive action training environment to execute unified land operations against a complex threat. (U.S. Army photo by Visual Information Specialist Markus Rauchenberger/released)