"Dr. John" Verble wore FBI wire that broke Pilot Flying J case
John Verble was the man who wore the wire for the FBI that opened the criminal cases against Pilot Flying J and 18 of its key executives.
http://archive.knoxnews.com/news/local/did-dr-john-start-pilot-probe-ep-960766779-353518391.html
https://law.justia.com/cases/federal/appellate-courts/ca6/15-6397/15-6397-2017-01-13.html
https://www.supremecourt.gov/search.aspx?filename=/docketfiles/16-946.htm