ORIGIN OF GPS

The Global Positioning System was designed for and is operated by the U. S. military (Department of Defense), starting from '60 -'70. In the latter days of the arms race the targeting of ICBMs became such a fine art that they could be expected to land right on an enemy's missile silos. Such a direct hit would destroy the silo and any missile in it. But you could only expect to hit a silo if you knew exactly where you were launching from. That's not hard if missiles are on land, as most of them were in the Soviet Union. But most of the U.S. nuclear arsenal was at sea on subs. To maintain the balance of power the U.S. had to come up with a way to allow those subs to surface and fix their exact position in a matter of minutes anywhere in the world......so they created GPS!