Word: grainless
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Dates: during 1960-1969
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...Tricks. The plane's micro-miniaturized gear includes "side-looking" radar to peer through clouds and map terrain far from its path. New cameras use "folded optics" to produce telescopic closeups in black-and-white or on new, grainless color film-which can be dropped in pods and parachuted to waiting intelligence officers. When sensitive receivers detect incoming radar pulses, the Blackbird can dip into its bag of tricks and give itself "electronic invisibility." There is even a top-secret method of masking the SR-71's heat emissions to confuse enemy infrared tracking. Put together...
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