[AndrewC]

but I had to leave precipitously for Bethlehem, PA (medical emergency for my father).

Please allow me to express my concern, and to exhibit that concern in my way. I also wish you, your father and family wellness and comfort.

[Physicist]

Thanks for the kind words, friends. Such crises are unavoidable as he's in the end stages of Shy-Drager's syndrome, I'm afraid.