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Keywords from Image Description:
us navy usnavy radioman canal zone canalzone united states navy unitedstatesnavy usn aviation naval aviation navalaviation aircraft airship lighter than air lighterthanair dirigible uss shenandoah zr ussshenandoahzr uss shenandoah ussshenandoah zr zr naval aircraft factory navalaircraftfactory naf packard motors packardmotors packard