the other night, we had retired general stanley mcchrystal on the program, he was talking about the book that he's just written about leaders and leadership and what makes a good leader. the dedication says it well. "to john lewis and john mccain," it reads, "who remind us that it's possible to keep our humanity while leading with courage and commitment." well, it is possible, but it is not easy. and for this president, it might not even be something that he wants or knows how to do it. i want to get the latest now. authorities here in new york briefed reporters late today. so what have you learned, what is the latest development? >> there have been some pretty significant developments in the investigation, certainly for the fbi. they are now at this sorting site in south florida, they're zeroing in on this site, because they believe, if not all, perhaps most of the packages that were sent came through this site. the other thing, there seems to be a large focus now on the south florida area by