Battle Group Lithuania with German soldiers and British Royal Marines use their M3 Amphibious Rigs to form a bridge to allow both the Lithuanian and Polish NATO Battle Groups to cross a water obstacle near Rukla, Lithuania, June 19, 2017 during Saber Strike 17. Saber Strike 17 is a U.S. Army Europe-led multinational combined forces exercise conducted annually to enhance the NATO Alliance throughout the Baltic region and Poland. This year's exercise includes integrated and synchronized deterrence-oriented training designed to improve interoperability and readiness of the 20 participating nations' militaries. (U.S. Army photo by Spc. Stefan English)