A U.S. Army Soldier, of 500th Engineer Company, 15th Engineer Battalion, 18th Military Police Brigade, constructs a tank obstacle with a bulldozer during exercise Saber Junction 15 at the U.S. Army’s Joint Multinational Readiness Center in Hohenfels, Germany, April 12, 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 Spc. John Cress Jr./Released)