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Sarasota Sheriff's Sgt. Kevin Pingel Talks Polygraphs
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Sarasota Sheriff's Sgt. Kevin Pingel Talks Polygraphs

Kevin Pingel, a retired Sarasota County Sheriff's sergeant, talks about the ways a polygraph can be useful — and the ways it can sometimes be tricked by suspects.

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Sarasota Sheriff's Sgt. Kevin Pingel Talks Polygraphs

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