U.S. Army Soldiers from Alpha Company, 2nd Stryker Brigade Combat Team, 2nd Infantry Division, at the National Training Center, prepare for an air assault mission during a combined actions rehearsal at Fort Irwin, Calif., June 14, 2014. At the NTC, decisive action exercises provide a comprehensive approach to training brigade combat teams in a joint, interagency, intergovernmental and multinational environment. (U.S. Army photo by Spc. Charles Probst/Released)