Lithuanian soldiers and U.S. Marines from the Black Sea Rotational Force engaged opposition forces in a partnered attack during Exercise Saber Strike at the Pabrade Training Area, Lithuania, June 15, 2015. Fifteen nations and more than 7,000 service members took part in Saber Strike to promote security and cooperation in the region. Also available in high definition. (U.S. Marine Corps photo by Sgt. Paul Peterson/Released)