I know. I am so sorry to hear that. I'm guessing he has the "early onset dementia" (which occurs in your 60s) which from what I read IS hereditary, since it seems to run in his family. AND Glen Campbell a couple years ago also announced he suffered from it.
Sad news indeed.
TIS
"Mankind must put an end to war before war puts an end to mankind. War will exist until that distant day when the conscientious objector enjoys the same reputation and prestige that the warrior does today." JFK