>> because it rained so often -- does that throw dogs off? >> rain could have an adverse affect. the win, the direction of the wind can throw the dog off. the dogs are amazing. they can smell things 1,000 times better than a human being. >> a thousand times. >> they have got 5 billion receptors in the nose. they are amazing creatures. but still you can throw them off. >> chris, it's interesting that after successfully eluding law enforcement for two weeks that sweat was found walking through a wide open field. i mean is that -- does that surprise you? or is that the kind of mistake that fugitives usually ends up making at some point? >> well, it surprised me because we heard representations and very confident ones from the search leaders that they had him, they had him inside a perimeter. they didn't know exactly where he was -- >> right, that was friday night they were talking about that perimeter. >> very much. it turns out, though he very smartly separated earlier and he was making his way north. and apparently matt had had