. >> i know katrina nalevac smith from machesney park high school. she was a student of mine her senior year in the year 2000. we did the yearbook together. she was my senior editor. katrina, i thought, was really smart. she was very well driven. she was very mature for her age. >> katrina has vanished from the very place she spent most of her life, machesney park. it's a town that's part of the z larger community of rockford, illinois. >> rockford is located about 100 miles from chicago. about 20 miles south of the wisconsin border. it's a big small town. >> definitely more of a blue-collar community. a lot of manufacturing, a lot of people working hard to just make a better life for themselves. >> right away, you notice that manufacturing history when you come to this town. you can see so many industrial plants as you stroll along the river downtown. to locals, that's what rockford is known for. but to outsiders, this place is usually known for something else. >> when a lot of people first hear about rockford, illinois, they think of the rockford p