U.S. soldiers assigned to Alpha Company, 1st Battalion, 22nd Infantry Regiment, 1st Brigade Combat Team, 4th Infantry Division, participate in convoy training at the National Training Center (NTC) at Fort Irwin, Calif., Oct. 31, 2012. The NTC trains the transformed Army by conducting force-on-force and live-fire training for ground and aviation brigades in a joint scenario across the spectrum of conflict. (U.S. Air Force photo by Senior Airman Matthew Bruch/Released)