"The B-17 ""Flying Fortress"" bomber ""Nine-O-Nine"", tail number 231909, flying over Orange County, CA on May 12, 2013.  Taken about an hour before sunset, the bottom is clearly visible and evenly lit.  The vintage plane has been resored by The Collings Foundation to it's WWII (World War 2) configuration, after having served in nuclear bomb testing in the 1950's, being sold as scrap, and being converted into a forest-fire supression plane."
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