U.S. Army soldiers of the 2nd Cavalry Regiment work at a computer during a decisive action training environment exercise, Saber Junction 2012, at the Grafenwoehr Training Area in Grafenwoehr, Germany, Oct. 13, 2012. Saber Junction 2012, the U.S. Army Europe's premier training event, is a large-scale, joint, multinational, military exercise involving thousands of personnel from 19 different nations and hundreds of military aircrafts and vehicles. It is the largest exercise of its kind that the U.S. Army Europe has conducted in more than 20 years.