Clu Gulager, long time character actor. THR.
165 acting credits in IMDB. Man was in everything, from “The Virginian” to “The F.B.I” to “The Last Picture Show” to “Once Upon a Time… In Hollywood”, with lots of stops along the way…
…including “Mannix”. (“The Man Who Wasn’t There”, season 6, episode 16.)
Roger E. Mosley. Credits beyond “Magnum, P.I.” include “The Rockford Files”, “McCloud”, “McQ” (which Clu Gulager was also in), “The Mack”, and “The Sixth Sense” (the 1972 TV series).
As Mosley remembered it, his agent told him: ” ‘It’s starring this guy Tom Selleck. Tom Selleck has made about five pilot shows … and none of them has sold. So here’s what you do, Roger: Sign up for the show, go over to Hawaii, they’ll treat you good for the 20 days it will take to shoot the [pilot], you’ll get a lot of money, and then you come home. A show with Tom Selleck always fails, and you’ll be fine.’
“Well, 8 1/2 years later … “
Mosley in real life was a licensed private helicopter pilot (something the producers discovered after he was hired, he said) but not allowed to fly on the series.