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The same millimeter wave-length scanning that sees through your clothes at TSA’s very personal pre-flight inspections in airports could also provide a new type of heads-up display for pilots.  With an ability to distinguish power lines and other finely-resolved images in otherwise total visual blackouts, the technology could find a place in navigation, searches, and even private flying.  A few drawbacks stand in the way, however. Extremely high frequency MMW devices sense objects at a range just below that of the lowest frequency infrared light.  The high frequency allows a high level of discrimination in imaging. Used in automobiles for applications such as radar braking and adaptive cruise control, the potential for adapting such devices to weather flying is promising.  …