35mm duplicate slide in card mount

RC-135U Combat Sent refueling seen from tanker

The RC-135U Combat Sent is designed to collect technical intelligence on adversary radar emitter systems. Combat Sent data is collected to develop new or upgraded radar warning receivers, radar jammers, decoys, anti-radiation missiles, and training simulators. Distinctly identified by the antenna arrays on the fuselage chin, tailcone, and wing tips, three RC-135C aircraft were converted to RC-135U (63–9792, 64–14847, & 64–14849) in the early 1970s. In 1978, 63-9792 was converted into a Rivet Joint. 

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