I know who this guy is. He once had an article posted on the Florida Polygraph Assoc. website about countermeasures. Gist of it was that during a maintenance poly, he allegedly detected signs of countermeasures being used. A subsequent search of the guy's home found materials on how to perform countermeasures, and he was sent back to prison. I sent an e-mail to Nelson asking a simple question, that being "Did the search also turn up any evidence that the examinee was re-offending?" Needless to say, I never got a response back.