FILE - In this Oct. 24, 1950 file photo, newly landed U.S. paratroopers greet First Cavalry Division tank crewmen at Sukchon, North Korea, during the Korean War. Just a week later, the division's 8th Cavalry Regiment was caught in a trap by two Chinese divisions at Unsan, suffering heavy casualties. The U.S. command had abandoned efforts to rescue the regiment. Some 260 Unsan soldiers remain listed as missing in action. Washington is evaluating whether to work again with North Korea to recover such remains, a program suspended in 2005 by the Bush administration. (AP Photo/Max Desfor, file)