thanks. it's great to see you. >> thanks, david. nice seeing you, too. still ahead this hour, we will talk with a doctor about vonn's injury and what it could mean for olympic quest as far as the medical situation and physics. an update on the infamous natalee holloway case. nbc news has just confirmed the death of one of the key witnesses in the 2005 disappearance of that american teenager in aruba. 57-year-old paul van der sloot collapsed. he was with holloway the night she vanished. he says joran will return from holland for the funeral. they spoke with her mother beth about the father's death but had no comment at this time. caught on tape, a helicopter