Oh, to clarify a couple of things. It was a slip-and-fall accident in his home. We still go walking together, sometimes, but, at 81, and with Parkinson's, he can no longer walk so far. And, the doctor refused to resuscitate, even though it's in writing, in the POA agreement, to do everything possible to extend his life.
Just to add that a decent POA agreement is often more important than a will.