Posts Tagged ‘Tracking’

Search exercise planners handbook – Part Six

November 24th, 2009

How many clues can you find?

I often hear of search exercise planners and Training Officers trying to add motivation to an exercise by ensuring that there are loads of clues dotted around for teams to find. There are two comments I have regarding this practice;

One; In the lowland search environment it is extremely rare to find clues that are useful to the search management team. Why? Because the environment we search in is generally well-trodden already. There are no lack of potential clues in any urban, sub-urban or even rural setting in most places in the UK. Everywhere you go you will find discarded clothing, litter, drinks cans and so on – none of which is useful, as the SMT cannot tell if it is the mispers or not. Compare this to a search in the wilderness of the US, where few people have been in the last year/two/ten years!

The one potentially useful clue in our environment is track and sign, which can, with a skilled tracker, be given a useful time frame – Passed here in the last couple of hours or the grass would have totally sprung back up, walked here before/after the rainfall six hours ago and so on. This is doubly so if there is a comparison print available, or even shoe type & size.

The second comment I have upon using clues for exercises is that it reinforces the wrong behaviour. Searchers are “rewarded” for finding every clue, not finding the missing person quickly. As such searchers have tended to search closer together and slower – sweeping up everything in their path. This is done to the detriment of the overall search effort and success of the search. [Greater information on why this is so can be found in the paper, Spaced Out Searchers]

Care needs to be taken then, when deciding whether or not to use clues in any exercise. Generally, my advice would be, if in doubt don’t put any out!

This is even more important when searchers are being assessed – either for their basic search techniques course, team leaders or re-assessment. I would want to know that the individual could search for a misper, NOT find and sweep up litter!

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Training in Visual Search for SAR

November 4th, 2009

I recently started to read Mark Gleason’s paper – THE SEARCH FOR HUMAN REMAINS IN THE SEARCH AND RESCUE ENVIRONMENT. I’d downloaded it a while back and skimmed it, but hadn’t sat and thought about it much. I got as far as the first page before I got very distracted by something he wrote about “search images”;

Most experienced searchers possess mental images of what to look for with respect to a missing person based upon cumulative experience in the field. That degree of field experience lessens as the search mission moves along the continuum from live subject to dead subject, from dead subject to decomposing subject, and from decomposing subject to non-intact human remains or clandestine graves.

So we must ask ourselves whether or not the searchers we dispatch into the field have a realistic image of what they are tasked to look for?

Gleason references Stoffel, who wrote some interesting words on vision and perception, which can be found at http://www.eri-online.com/uploads/TheBriefing-PODConnection.pdf

But I had to learn a bit more; deeper reading into the subject led me to the global-focal model which suggests the way vision is processed works in a predictable manner – global impression, discovery search, reflective search and post-search recall.  More reading suggested that accuracy in visual search can be improved with specific training and this would reflect the results of the sweep width reports and the higher sweep widths of park rangers and trackers – who are used to the search environment.

Lots of tracking texts I have read start with training the eye to “see” things in the outdoors etc. Maybe this should be studied more in SAR, and become part of search training – a bit like the old “clue” field exercise that used to be done before its meaning got lost and became just a find everything practical.

I’m sure I’ll be writing more on this sometime…

 

 

 

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