A Soldier with 1st Battalion, 503rd Infantry Regiment,

A Soldier with 1st Battalion, 503rd Infantry Regiment, 173rd Airborne Brigade guards the runway of an airfield June 16, 2015, at Swidwin Air Base in Poland during Exercise Saber Strike 15. Encompassing more than 6,000 participants from 13 different nations, Saber Strike is a long-standing U.S. Army Europe-led cooperative training exercise. Designed to improve joint operational capability in a range of missions as well as preparing the participating nations and units to support multinational contingency operations, this year's exercise takes place across Estonia, Latvia, Lithuania and Poland. (U.S. Army photo by Spc. Marcus Floyd, 13th Public Affairs Detachment)