That's very interesting, thank you! Could you help me understand the distance column? that column on the far right with percentages and distance?
Here is the part of the handbook that might help-
I’m only familiar as a volunteer that has been out on a few searches. The guide is based on cases studies. Hopefully, someone more experienced than me can explain it, but I’ll try.
The IPP is the ‘Initial Planning Point’ for the Search and Rescue team. In this case, for example, one point might be where Branden’s phone was found. (Just to use that as an example). Eg - 20% people found of the cases similar to Branden’s, they were found within 0.16 kilometres of that item. If you go down to 100%, of all of the case studies, they were found within 12.80 kilometres of that point. (His phone, in this example).
Percentages are where the number of people were found from points of interest. I’m not sure what points they may have picked for Branden. I’m also not familiar with the area or terrain.
One search I participated in was for a teenage girl in Toronto. The police profiler felt she may have been a risk for suicide.
We were told to familiarize ourselves with ‘suicidal behaviour’, combine it with what we knew of the victim, then search within areas of interest.
The points of interest were familiar, meaningful places to her. Her likely means of harming herself were features of the environment: jumping from a height, drowning in bodies of water.
One place significant to her was a park where she and her family frequented. There was an overpass close by.
Another point was where her school backpack was found. Items are tricky because in her case, the backpack was picked up and moved about 700 metres from where it was first found. The police set up a command post at the location it was ultimately found after being moved.
The Search and Rescue teams drew a circumference around each point and that is where they searched. We volunteers also looked for her once they widened the search area.
She unfortunately was later found outside of the search area close to the park that had been checked by police. She had jumped from an overpass and landed in an area of a golf course that was closed off and inaccessible except to the police, other officials or the owners. (Private property, closed off and the owners didn’t check their property despite the media coverage of the missing girl and the nearby search activity.)