Yes, Rog, I do have an update. Dad's wearing a holter monitor to monitor his heart for 30 days to see if they can record what happens during one of his episodes when he passes out. I've had to wear one myself several times. Not fun. Anyway, they think they know what it is and it's a condition I have dealt with my entire life. Fortunately, it's mostly benign, especially if one takes precautions and learns to recognize the warning signs quickly and take immediate action, but it can be life threatening in certain situations. Mom and dad got CPR certified when I was younger because I've flatlined several times because of it. Dad's situation, fortunately, doesn't appear to be as severe right now. Please continue to keep him in your thoughts and prayers though. He's having to make some difficult changes to his lifestyle and it's not going to be easy. He's trying though, so that's good.