. >> an exhaustive search goes into its second day since 18-year-old amanda stavik suddenly disappearede had every kind of mode of transportation to search, from riding motorcycles, jeeps, going door to door, walking the ditches, bringing in blood hounds. >> they had patrols going through fields that were adjacent to her house. we had specifically trained people, that are called man trackers. >> my name is joel hardin. i was the border patrol's expert tracker for 20 years. >> the biggest conception about when someone says tracker is someone is down on their hands and knees looking for shoe impressions or footfall, they call it. it's so much more than that. >> i see in the surroundings, in the ground cover and so on, that which other people see but are not conscious of. >> i took several classes and the instructor would say look at this leaf. turn it over. see this mark? it's a bruise. that's probably four to five hours old. when a branch on a live bush is broken, it bleeds and it scars. by looking at that you can pretty well predict when it was broken. >> expert trackers used the term "