Born in Massachusetts in 1925, Frost spent his early years in the Bronx before moving to Vermont, Variety reported. He joined the Navy at age 17 after graduating from high school in 1942. He spent three years as a First Class Petty Officer and was part of the D-Day invasion at Normandy, with his ship serving a minesweeper in advance of the Allied armada to come.
He attended Middlebury College in Vermont, where he met his future wife, Virginia Calhoun, and then began his TV career in New York with jobs that included stage manager for early shows, the AP reported.
After moving to Los Angeles in 1958, Frost worked steadily on TV series including "Dragnet" and “Perry Mason” appeared in movies including "The Mating Game" and "It Started with a Kiss."
Frost retired in 2000.