Ronald Lee Ermey (born March 24, 1944) is a former U.S. Marine Corps drill instructor and later Golden Globe-nominated actor, often playing the roles of authority figures, such as Gunnery Sergeant Hartmann in Full Metal Jacket, Mayor Tilman in the Alan Parker film Mississippi Burning and Sheriff Hoyt in The Texas Chainsaw Massacre remake. In Fallout Tactics, he voiced General Simon Barnaky and one of his lines from the ninety minute pilot episode for Space Above and Beyond was referenced in Fallout 2 by Dornan.