and hiking trails. with a passion for spanish language and latin america, it was the teen s idea to make the trip before heading off to the university of oklahoma in the fall, where he had been admitted on a full scholarship. his family says the thought that the 18-year-old may have wandered off by himself is out of the question. the next day we were supposed to leave. we had booked a tour to go in the jungle three nights with a guide, and it was really because of him that we booked that, you know? he s the one who is, as i said, particularly interested in the indigenous cultures and so forth, and we were supposed to leave on that the next day. and you know, he was real excited about it. he didn t have anything with him. he didn t have any money, he didn t have phone, he didn t have anything. reporter: it s estimated there are more than 150 search-and-rescue volunteers that have combed the mountain where reiger was last seen. also involved, the u.s. state department. but with no si