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Keywords from Image Description:
thule afb thuleafb greenland SDASM.CATALOG Balchen SDASM.TITLE Thule AFB Greenland SDASM.DATE SDASM.ADDITIONAL INFORMATION Under Construction SDASM.COLLECTION Bernt Balchen Collection SDASM.TAGS Thule AFB Greenland PUBLIC COMMONS.SOURCE INSTITUTION San Diego Air and Space Museum Archive SDASM.CATALOG Balchen SDASM.TITLE Thule AFB