Jason Momoa worked with a coach to speak Hawaiian authentically in 'Chief of War'

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This image released by Apple TV+ shows Jason Momoa in a scene from "Chief of War." (Apple TV+ via AP)

HONOLULU – Jason Momoa drove a vintage pickup along a winding country road in Hawaii, a tattooed arm dangling out the window and Metallica blasting.

“POO'-ah-LEE',” he said.

His passenger corrected him, again, modeling the subtle emphasis on the “u” sound: “Puali.”

Momoa was preparing for his role in “Chief of War,” the first major TV series featuring the language and culture of Hawaii's Indigenous people. His passenger, Kahoʻokahi Kanuha, connected with Momoa years ago while they were both protesting against a giant telescope on a mountain summit held sacred by some Native Hawaiians. He wound up living with the Hawaiian Hollywood superstar for nearly a year