This app can be utilized for a variety of real world missions. It automatically calculates the range and bearing from your present GPS location to the target GPS location. It will provide a fairly accurate estimation of the range to the target in miles and the bearing to the target in degrees. As you or the target move, it will automatically recalculate the range and bearing to the target. This app can also be used for Land Navigation in the event that you are stuck like CHUCK out in the middle of hells' half acres and you were intelligent enough to memorize the GPS coordinates of your FOB or the position of your friendlies'. It doesn't take the place of a hand held GPS device but for a smartphone app it sure is a hell of a lot better than nothin'. The app creator assumes NO LIABILITY for the use or misuse of this application! HUUUUUUAAAAHHHHHHHHHHH! "COME ALONG FOR THE RIDE!"