You see how much the scale is, let's say that it is 150 mm=300 miles. If it goes over, you can measure it with a ruler, or move with your hands, measuring it as well as possible and estimating. Hope this helps! :)
Unfortunately I do not understand what you are needing. It looks to me that you need to look up several facts and then create a presentation on law, public safety, and security careers. And the best place to look that info up on is online. Sorry if this isn't what you need but i do hope that this helps!
