German army Lt. Florian Landgraf (left), assigned to the German Armed Forces United Nations Training Centre and U.S. Army Sgt. 1st Class Ryan Slyter with 1st Squadron, 91st Cavalry Regiment, 173rd Airborne Brigade, fires a U.S. M249 light machine gun during a combined training exercise at the Infantry Training Area in Hammelburg, Germany, Jan. 29, 2015. Both U.S. and German Soldiers trained on several light-infantry weapons systems during a two-day combined exercise to enhance interoperability. (U.S. Army Photo by Visual Information Specialist Markus Rauchenberger/released)