Unfortunaely this is only the end of the beginning of this story...can't help but wonder if there's now a love-child involved...being as he said he met with her here in the U.S. at least twice I believe over the past year, but to make the decision to travel to Argentina--to take such a risk without anyone knowing his whereabouts...could very well be.
He WAS recognized at the Atlanta airport by a reporter. That's when the story changed from "hiking trip" to "getaway to Buenos Aires".