"Suspect is heading north-west. He is armed and considered extremely dangerous." This is the kind of statement on police radio is Hollywood action movies and it has always made me think "Man! Are they good with their directions or what" I mean a cop is running constantly changing directions and while doing that he is able to figure out where is north and where is south. As far as I am concerned, I have to pause, think "The sun rise from there which means that is east, that is west and that would make it... north." This is a calculation I have to mentally do when I am standing in my own yard. If I am outside somewhere, it is practically impossible for me to figure it out...unless I have a compass.