U.S. Navy Petty Officer 3rd Class Victor Castro (left) helps Marine Corps Lance Cpl. Josue Hernandez climb up a ravine during a partnered patrol with Afghan soldiers in Sagin in Afghanistan's Helmand province on Feb. 20, 2012. Castro, a corpsman, and Hernandez, a rifleman, are assigned to India Company, 3rd Battalion, 7th Marine Regiment. The Marines are training the Afghan soldiers to patrol on their own with the Marines in a support role.