 FACT: When John Smith is firing the Widowmaker missile at Jane, the  targeting screen shows latitude and longitude coordinates that place  him somewhere in Alaska. When John is trying to break into the  prison to retrieve "The Tank," his shown coordinates place him 350  miles off the coast of Spain. Also, if you time John Smiths  movement in the pipe, and compare it to the updated coordinates, he  moves over 900 feet in 11 seconds, about 55 miles per hour. And when  he is climbing the vertical pipe, his coordinates should remain  steady. Also, the likelihood of receiving a GPS signal underground  in a pipe is slim to none.