Army Capt. Genaro Prieto arranges placards for a sand table in the Mojave Desert at the National Training Center on Fort Irwin, Calif., Feb. 21, 2013. Prieto, a engineer, is assigned to the 1st Infantry Division's 2nd Armored Brigade Combat Team. Army Capt. Genaro Prieto arranges placards for a sand table in the Mojave Desert at the National Training Center on Fort Irwin, Calif., Feb. 21, 2013. Prieto, a engineer, is assigned to the 1st Infantry Division's 2nd Armored Brigade Combat Team. SHARE: Download: Full Size (2.1 MB) Tags: Photo Essays Credit: VIRIN: 385869-P-LNL98-274.jpg Photo Gallery