U.S. Army Spc. Marcus Chambers, a 27-year-old native of Victorville, Calif., and combat engineer assigned to Company A, 4th Brigade Special Troops Battalion, 4th Infantry Brigade Combat Team, 1st Infantry Division, overlooks medical training with an Afghan National Army route clearance company, Dec. 4, 2012. (U.S. Army photos by Sgt Gene Arnold, Task Force 4-1 PAO)