Ronald Lee Ermey (March 24, 1944 – April 15, 2018) was a retired United States Marine Corps drill instructor and actor. Ermey often played the roles of authority figures, such as his breakout performance as Gunnery Sergeant Hartman in Full Metal Jacket, Mayor Tilman in the Alan Parker film Mississippi Burning, Bill Bowerman in Prefontaine, Sheriff Hoyt in The Texas Chainsaw Massacre remake, and ...