GPS

The Global Positioning System or GPS for short is a global navigation satellite system which was developed by the United States Department of Defense and it is managed by the United States Air Force 50th Space Wing. The GPS uses satellites that transmit precise microwave signals allowing the GPS to determine the user's current location, time and their velocity.It is the only fully functional global navigation satellite system in the world. It can be used freely. It is mainly used by people who either get lost a lot and don't know where to go to get back to where they were or people who are afraid they are going to get lost and just like to be sure that they are going the right way. When I go hiking with my uncles and dad, we always take a GPS just to make sure that we are following the right trail because if you get lost in the woods it is hard to find the trail again.

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