The Hat Squad was started in the mid 2000's by two Detective Sergeants in the Child Abuse Unit.

Tim "Chopper" Williams was a proud member.

Tim observes a polygraph examination of a suspect. Tim later, at his own expense, went to polygraphers school to learn the trade.

THE THIN BLUE LINE

Tim shakes hands with the legendary polygrapher Cleve Baxter after Tim completed the very crueling 8 week course to learn the art of polygraph examination.

Tim and rocker Bret Michaels

Tim enjoying his birthday with President Barack Obama