U.S. paratroopers of the 173rd Airborne Brigade tactically

U.S. paratroopers of the 173rd Airborne Brigade tactically maneuver while conducting an offensive operation during Exercise Saber Guardian at the Bezmer Training Area, Novo Selo, Bulgaria July 21, 2017. Saber Guardian 2017 is a multinational military exercise involving approximately 25,000 military personnel from 23 participating nations. The exercise is part of U.S. European Command's Joint Exercise Program designed to enhance joint combined interoperability between Bulgarian, Romanian, Hungarian, U.S., NATO Allies and other Partnership for Peace nations. (U.S. Army photo by Sgt. Matthew Hulett)