Question: While Tom Selleck is known for starring as private investigator Thomas Magnum in the television series "Magnum, P.I.", what role did Larry Manetti, play on "Magnum, P.I."?
Sentence (from "Tom Selleck"): Since 2010, he has also been a primary cast member as NYPD Commissioner Frank Reagan in the drama "Blue Bloods" on CBS.
Relevant evidence: No