Thomas William Selleck (; born January 29, 1945) is an American actor. His breakout role was playing private investigator Thomas Magnum in the television series Magnum, P.I. (1980–1988), for which he received five Emmy Award nominations for Outstanding Lead Actor in a Drama Series, winning in 1984. From 2010 to 2024, he portrayed NYC Police Commissioner Frank Reagan in Blue Bloods. From 2005 to 2015, he portrayed Jesse Stone in nine television films based on the Robert B. Parker novels. In films, Selleck played bachelor architect Peter Mitchell in Three Men and a Baby (1987) and its sequel Three Men and a Little Lady (1990). He has also appeared in more than 50 other film and television roles since Magnum, P.I., including the films Quigley Down Under, Mr. Baseball, and Lassiter. He appeared in recurring television roles as Monica Geller's love interest Dr. Richard Burke in Friends, as Lance White, the naive private investigator on The Rockford Files, and as casino owner A. J. Cooper on Las Vegas. He also had a lead role in the television Western film The Sacketts, based on two of Louis L'Amour's books. Selleck was a spokesman for the National Rifle Association of America, an endorser in advertisements for National Review magazine, and co-founder of the Character Counts! organization. He also served as an infantryman in the California Army National Guard from 1967 to 1973, attaining the rank of sergeant.