I don't know what you are talking about. MOST of the US aircraft mfg. in 1941 was on the west coast and ALL of that was within range of ANY Japanese gunboat that pulled up to shore or anywhere near shore. There was NO US navy to stop them and next to NO ground troops immediately present to protect these facilities. Should the Japanese have been 'removed' from the cities.... ??? American Xenophobia??? War footing good sense...??? Knee jerk reaction of a government already caught once in a humiliating and destructive surprise attack??? You figure it out.
It was in range of any japanese gunboat with the capability of crossing the Pacific Ocean undetected which meant near zero probability. How can I be so sure the probablity was near zero ? Because if what you say is true, then the Japs would have tried to do it and the fact that they had either zero attempts and/or zero successes means by virtue of indisputable empiracle real world evidence, I am right and you are wrong.
Hawaii was pretty much the extent of how far the Japanese Navy could get without refueling facilities. Logistically, hitting Pearl Harbor was pure genius on the part of the Japanese Admiralty. Doing the same to San Francisco would have been next to impossible.
There was NO US navy to stop them and next to NO ground troops immediately present to protect these facilities.
Protect the facilities from what, an invasion? No way that was even in the realm of possibility.