Gone at 77. I always thought he seemed like a good, genuine guy. There was a good "A Football Life" episode on him. Unfortunatley he got a bad rap for coming up short in championship games, but he was a successful coach in my eyes. He was a solid player before he was a coach, too.
https://www.nfl.com/news/marty-schottenheimer-eighth-winningest-coach-in-nfl-history-dies-at-77
https://www.nfl.com/news/marty-schottenheimer-eighth-winningest-coach-in-nfl-history-dies-at-77