U.S. Marine Corps Staff Sgt. Herbert M. Grose Jr., teaches  third-grade students how to build a field expedient antenna as part of the Science, Technology, Engineering and Mathematics week at Stearley Heights Elementary School on Kadena Air Base on December 19, 2013. Grose is a signals intelligence specialist with G-2, intelligence, Headquarters Battalion, 3rd Marine Division, III Marine Expeditionary Force. (U.S. Marine Corps Lance Cpl. Diamond Peden)