Fiber optics course
Staff Sgt. Gary Graf, an 821st Expeditionary Training Squadron cable and antenna maintenance instructor at Camp Taji, Iraq, gathers his students around a table as he demonstrates some of the characteristics of fiber optics Feb. 13, 2010. During the 42-day a fiber optics maintenance course, Iraqi military students learn about theories, splicing cable and the improved capabilities that fiber optics can bring. Sergeant Graf is deployed to the 821st ETS from Sheppard Air Force Base, Texas. (U.S. Air Force photo/Master Sgt. Trish Bunting)
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