The terrain following guidance in cruise missiles had an accuracy of a few meters in the early 80s. The only place that tech doesn't work is over the ocean...

The terrain following guidance in cruise missiles had an accuracy of a few meters in the early 80s. The only place that tech doesn't work is over the ocean... where there aren't any Russian cell towers. http://www.dtic.mil/dtic/tr/fulltext/u2/a110286.pdf http://www.dtic.mil/dtic/tr/fulltext/u2/a110286.pdf