Hanger 1 at moffett is only 348,480 sq ft, that is an absolute unit of a Frys at 400,000. Maybe I'll have to drive over to Chicago and check that out before their inevitable closure.
The Frys in Chicago is more like a normal big box store size like a Target. I just drew a ploygon over it on Google maps and it's 3.6 acres (~156k sq ft)