His driving might be of concern, even though he uses a GPS. I encourage you to put some sort of tracking device on his person. We use a Smart Care Watch which enables me to track him and also enables us to call each other. If he ever should get lost, call police right away. Don’t wait 2 hours like I did. He had gotten on the interstate and almost to the state line! That was before we got the watch. He never drove again after that day.