Kai with a piece of equipment

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This is Kai holding a PID (photoionization detector), it’s basically, the electronic version of a fire dog!!
In this incident, Kai made a find, he picked up on it about 1/4mile away.
When he made the find, we used the PID to confirm it’s location, the PID measures in parts per million…….it said there was nothing there!!
We excavated the area, and at a depth of about 10cm the PID finally found something!!
Kai 1, PID 0