428-GX-USN 1139581: Aviation Electronics Technician Second Class Bill Nelson, (center), explains the altitude hold on the MQM-36A Target Drone aircraft for Chilean Navy Men, Petty Officer Second Class Sergio Candia, (left), and Petty Officer First Class Carlos Alverez, Right), at Naval Air Station North Island, San Diego, California.    Photographed by AN Ron Hari, December 12, 1968.  U.S. Navy photograph, now in the collections of the National Archives.  (2015/12/15).
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