It’s amazing what a little camouflage can do. Apparently during World War II to avoid potential bombing the government went to great lengths to disguise an aircraft plant. Check out more of these amazing photos at the link.
During World War II the Army Corps of Engineers needed to hide the Lockheed Burbank Aircraft Plant to protect it from a possible Japanese air attack. They covered it with camouflage netting to make it look like a rural subdivision from the air.
Link
Same thing with Boeing plant...
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