Saw this earlier. Apparently he had complications during an undisclosed surgery and never recovered. He was 61. Loved him in his early stuff from youth playing Chet in Weird Science and of course the flippant grunt Pvt. Hudson with the punch lines in Aliens and Apollo 13. Tombstone was great! Always had that drawl in his voice and proved versatile from director to actor. I didn't even realize he was now starring in the TV version of Training Day.