A South Korean army K1 tank fires during an annual South Korea-U.S. joint military drill, known as the Key Resolve exercise, at Seungjin Fire Training Field in Pocheon, south of the demilitarized zone (DMZ) that separates the two Koreas since the Korean War, Thursday, March 8, 2012. (AP Photo/Yonhap, Lim Byung-shick) KOREA OUT