In 1964 the San Vito base and the base at Chicksands were the first to be equipped with the FLR-9 radio interception system and were part of a new intelligence network codenamed `Iron Horse'. Three other FLR-9 antennae are known to have been built at Misawa Air Base in Japan, Clark Air Base in the Philippines, and Elmendorf Air Base in Alaska.
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Air Strip above Torri Station Okinawa in 1964. Et was operate3d by members of the Naval Security Group attached to the Joint Service Processing Center at Torii.