A U.S. Army Soldier from Alpha Company, 2nd Stryker Brigade Combat Team, 2nd Infantry Division, at the National Training Center, prepares for an air assault mission 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)