Lots of headquarters are here, but the physical plant is tiny and manufacturing and assembly volume are at the booutique level. When the Army or the DoD requires a half-million units of something, there's nobody on this side of the Yellow Sea that is in a position to deliver it.
I also work in the industry, and I see what goes to the warfighters. It ain't made in California.
Your correct about Cali - it doesn’t need to be out of that “golden state”. TI is in Texas, Intel is elsewhere as well. ATC is on the East coast. etc etc. 1/2 million is nothing for a wafer plant - lucky if you can get them to make the dies for less than that - I know I’ve tried.