who is harry duvayer and why is this missing person so much more important because people go missing all the time? >> the concern is the area he disappeared in. this is giving people concern about his safety. he's a 32-year-old new yorker who quit his job in finance to travel the world. he has traveled extensively in the past so he sort of has his wits about him, he's savvy when traveling, but in this case something has gone horribly wrong. he planned to go from mexico to south america and eventually down to the south pole. this was something he was trying to do full-time. he was adventurous and has traveled the world, but he's always in touch with them during his travels or let them know that he would be out of pocket. >> you heard what alexandria said because of the part of mexico, what makes it so dangerous? >> the travel advisory from the state department which essentially they are not allowed to go there, and if you're an american or someone else who happens to get caught up there, the likelihood of them going in to help you out is very slim. as you know, don, i covered the drug