Gunnery Sgt. Guillermo Fuentes, administrative chief, 7th Marine Regiment, a native of Ensenada, Mexico, enjoys reading ancient literature and is currently writing a self-improvement book on the cultural limitations we set for ourselves. (Official Marine Corps photo by Cpl. Julio McGraw/Released) - Gunnery Sgt. Guillermo Fuentes, administrative chief, 7th Marine Regiment, a native of Ensenada, Mexico, enjoys reading ancient literature and is currently writing a self-improvement book on the cultural limitations we set for ourselves. (Official Marine Corps photo by Cpl. Julio McGraw/Released)