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Parr was a film advisor for the feature film dramas "In the Line of Fire" (1993) and "Contact" (1997), and for the documentaries "In the Line of Fire: Behind the Scenes with the Secret Service" (1993), and "Inside the US Secret Service" (2004). He also served as a commentator on C-SPAN, "Larry King Live", "Meet the Press", Discovery Channel, History Channel, PBS, and Travel Channel.