Service members assigned to more than 40 NATO and Partnership for Peace countries start opening ceremonies during exercise Combined Endeavor 2013 at the Joint Multinational Training Command in Grafenwoehr, Germany, Sept. 12, 2013. Combined Endeavor is an annual command, control, communications and computer systems (C4) exercise designed to prepare international forces for multinational operations in the European theater. (U.S. Army photo by Spc. Franklin Moore/Released)