M1A2 Abrams tanks start their engines in Parsberg, Germany, during exercise Combined Resolve III, Oct. 18, 2014. Combined Resolve III is a multinational exercise, which includes more than 4,000 participants from NATO and partner nations, and is designed to provide a complex training scenario that focuses on multinational unified land operations and reinforces the U.S. commitment to NATO and Europe. (U.S. Army photo by Spc. Brian Chaney/Released)