Airman 1st Class Brendon Markham, load master, 21st Airlift Squadron, ground guides a Stryker from 2nd Battalion, 23rd Infantry Regiment, 1st Stryker Brigade Combat Team, 4th Infantry Division, during air load operations in preparation for a flight to the National Training Center at Fort Irwin, Calif., May 21, 2015. The Soldiers deployed to the major training area located in the Mojave Desert to act as the opposing force for visiting military unit training.