A U.S. Apache helicopter fires a missile during a live fire gunnery exercise with the South Korean army at the U.S. army's Rodriguez range in Pocheon, about 70 km (43 miles) northeast of Seoul and about 15 km (9 miles) south of the demilitarized zone separating the two Koreas May 22, 2008. The South Korea-U.S. joint military exercise was carried out to improve the two countries' combat abilities against a possible attack from North Korea. REUTERS/Jo Yong-Hak (SOUTH KOREA)