Another update.

I just learned that my father is living in a van in El Cajon. I already knew he is speeding pretty heavily these days. I have a phone number for him. I don't really know what I should do about this, other than let my sister know where he is too. Do I call? Do I do a reverse look up and go visit? do I leave him a care package? He LIVES DOWN THE STREET, practically. This month marks two years since I have seen or spoken to him. He has chosen this, should I leave well enough alone, or do I treat this information as a gift and make the best use of it I can?