Five PPD chiefs. This is the only photo containing five PPD chiefs together, along with four high-ranking officers. Seated l-r: Chief Drexel Caldwell (1962-1974), Chief James Davis (1974-1980). Standing: Captain Bob Cotita, Chief Chip Simmons (2010-2015). Captain Dickie Johnston, Chief Norman Chapman (1994-1998), Chief John Mathis (2002-2010), Inspector Wendell Rich, Chief Jerry Potts (1998-2002).