South Korea Sojourns XI: Chungju
Chungju, Republic of Korea, pictured here July 26, 2014, was renowned for its ability to produce steel. High-quality materials were valued by warring armies, which made Chungju a valuable strategic target in millenia past. (U.S. Air Force photo by Staff Sgt. Jake Barreiro)

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Photo by: Staff Sgt. Jake Barreiro |  VIRIN: 140726-F-TG070-134.JPG