In this Thursday, Dec. 3, 2015, photo, village elder Kim Ri Jun digs up a burlap sack which he claims contains the remains belonging to a soldier who fought in the Korean War from a burial site on Ryongyon-ri hill in Kujang county, North Korea. "Until They Are Home" is one of the most sacred vows of the U.S. military, yet there are 5,300 American GIs missing in North Korea from the Korean War whose remains are potentially recoverable. It has been more than a decade since any U.S. search teams have tried, and with construction projects across the country moving forward, many could already be lost forever. (AP Photo/Wong Maye-E)