Most of the information could be checked and corrected with a portable GPS set, a laser rangefinder, (both available at WalMart (and probably both made in China) and a little spherical trig, maybe a boat in some cases. It would be close enough for targeting purposes anyway. Unlike the Soviets/Russians and the Red Chinese, our bases are pretty open and public.
Well now subject citizen, you'll just be handing those over to us as well eh? Our goobermint needs to 'protect' us from too much freedom. And there's no reason you need anything like that...