Soldiers with the 2nd Battalion, 159th Attack Reconnaissance Battalion, 12th Combat Aviation Brigade take off in a Boeing AH-64 Apache helicopter June 18, 2015, in Mirosławiec, Poland, during 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)