Sinai Field Mission documents the routine activities of the diplomats and electronic technicians who operate the United States Sinai Field Mission, the early warning system established in 1976 to help carry out the disengagement agreement between Egypt and Israel following the 1973 war. The major purpose of the Mission is to monitor the approaches to the strategic Mitla and Giddi Passes and to verify the operations of the Egyptians and Israeli electronic surveillance stations in the Sinai Buffer Zone. Sequences show the operation of the early warning station, the inspection of all people and vehicles entering Israeli and Egyptian electronic surveillance bases, the monitoring of traffic through the Buffer Zone, the relationship of the United Nations forces and the say-to-day activities of 163 Americans living in the Sinai Desert.