Timothy Reynolds worked as an electrician and best boy on "Yellowstone," meaning he was a senior electrician and primarily responsible for setting up lights (via IMDb). He tragically passed away on August 24, 2022, at the age of 66. His family has not publicly released the cause of his death.
Born in Salt Lake City, Utah, in 1955, Reynolds initially worked as a stockbroker before realizing his true calling was working in film and television. In 1994 he joined the stagehands and crew union International Alliance of Theatrical Stage Employees (IATSE). In 1997 he received his first credit when he worked as an electrician on a TV movie called "Not in this Town." He also worked on films such as "Meet the Deedles," "John Carter," and "Hereditary," and he worked tech for the 2002 Winter Olympics in his native Salt Lake City (via Cinemaholic)
Reynolds worked on "Yellowstone" for a total of 31 episodes, once calling it his dream job on his Instagram and only stopping after the second episode of the show's fourth season. He is survived by his wife Sierra, his sister Shirley, three sons, a daughter, a stepson, and several grandchildren.