I also hope his passing was quick and painless.  I know he was fishing last summer. 

He was a remarkable man, really.  Nursed his wife through a years-long battle with ALS and cared for her at home until her death.  I think he had a good, productive, long life.  He also had a cabin in Michigan's Upper Peninsula, and in the winter the only way to reach it was to ski in.  He sent me photos from the cabin one year.  He was in his 80's then.