Pat McKenna served as the defense team's private investigator, working behind the scenes to locate and interview witnesses whose accounts could bolster the case against Detective Mark Fuhrman's credibility. During a heated March 1995 hearing over whether Fuhrman had used racial slurs, F. Lee Bailey described McKenna as the one who had been in direct contact with witness Max Cordoba — conducting phone interviews, recognizing Cordoba's voice, and tracking him down again when NBC aired a report suggesting Cordoba had given conflicting statements. McKenna's investigative legwork fed directly into the defense's broader strategy of impeaching Fuhrman, surfacing witnesses and corroborating accounts that the lead attorneys then argued before the court.