A Luxembourg Army soldier stands guard during exercise Saber Junction 15 at the U.S. Army’s Joint Multinational Readiness Center in Hohenfels, Germany, April 23, 2015. Saber Junction 15 prepares NATO and partner nation forces for offensive, defensive, and stability operations and promotes interoperability among participants. Saber Junction 15 has more than 4,700 participants from 17 countries, to include: Albania, Armenia, Belgium, Bosnia, Bulgaria, Great Britain, Hungary, Latvia, Lithuania, Luxembourg, Macedonia, Moldova, Poland, Romania, Sweden, Turkey and the U.S. (U.S. Army photo by Visual Information Specialist Markus Rauchenberger/Released)