Comanche:<br><br>Actually, I had already found that site - in fact, it was the site that first opened my eyes to the possibility of using SAR as a math teaching incentive. Unfortunately, the math formulae they give didn't come with much explanation - not even a definition of what the terms mean, which makes it hard to understand their application.<br><br>However, once you pointed me back to the site, it occurred to me that by adding those terms - POA, POD, and POS (which doesn't mean what I thought it meant ;-) - to my Google search, I might be more successful. It led me to another page on that site, which somehow doesn't seem to be accessible by a direct link from their home page - http://www.sarbc.org/probabil.html<br>which is a fairly high level paper on "Search Probability Theory". At least it gives me some more detailed papers to read and some idea on how I might develop a series of math problems, possibly an entire desktop exercise (where the cadets would get to play the roles of the emergency SAR co-ordinators, trying to calculate the best areas to search).