Randy Johnson was the chief of police responsible for the murder investigation of Brenda and Erica Lafferty in 1984, in American Fork, Utah. “I cannot recognize any actual person that I knew or came to know, accurately depicted in the series. The series does not reflect the actual investigation that I oversaw. Nor does it reflect the attitudes, behaviors and conduct of me or any of my officers. It is clearly a work of fiction as indicated by the disclaimer. I affirm that to my knowledge neither I nor any of my officers ever lost our personal faith.” He is interviewed here by Craig Foster.

A rough transcript is available here. More information about the disinformation in Under the Banner of Heaven can be found here.