A U.S. serviceman sets down a box containing human remains during a ceremony at Pochentong Airport in Phnom Penh on Monday after bones, teeth and other artifacts of several U.S. servicemen missing in Cambodia since the Vietnam War were handed over to American officials. The undetermined number of remains were recovered in two separate operations in cooperation with Cambodian officials. One of the operations recovered remains at the site of the Mayaguez rescue mission in 1975.