Schwert;<br><br>Good point. I was intending to go back to the website and get more data on how fast children are likely to travel - I believe they have compiled some pretty detailed statistics covering the speed of different categories of people in different types of terrain. From the point of view of the simulation, you're right of course, mathematically it doesn't matter what numbers I choose (I could have the kids doing 100 mph on foot and still make the numbers come out right) but since that's the case, I might as well choose values that are close to reality.<br><br>Another number that I will have to consider will be the speed of the search team in covering the ground - I believe the paper I found estimated 3.5 mph for that, I'll have to check and see if they qualify that for different types of terrain.<br><br>Once I have the scenario compiled, I'll post it here - anyone who wants to try running this as a group exercise with Scouts or other youth groups is more than welcome to steal any of my ideas, just in case anyone was wondering. :-)<br><br>Of course, I'll definitely let you all know how it goes over with the cadets.