New York Times.The Utah native found his breakthrough role in a recurring role in the 1970s period drama “The Waltons.” Soon, he played a range of often crotchety characters on the big screen, including a nuclear power plant engineer in 1979’s “The China Syndrome,” a tenacious district attorney in 1981’s “Absence of Malice” and a country music manager in 1983’s “Tender Mercies.”His biggest role may have come in Ron Howard’s 1985 hit “Cocoon” as the leader of a group of senior-citizen outcasts