Fifteen-year-old Debbie" is the middle child in a close-knit Air Force family from suburban Phoenix, and a straight-A student. [She] is one of thousands of young American girls who authorities say have been abducted or lured from their normal lives and made into sex slaves. While many Americans have heard of human trafficking in other parts of the world - Thailand, Cambodia, Latin America and eastern Europe, for example - few people know it happens here in the United States. The FBI estimates that well over 100,000 children and young women are trafficked in America today. They range in age from 9 to 19, with the average age being 11. And many victims are no longer just runaways, or kids who've been abandoned. Many of them are from what would be considered "good" families, who are lured or coerced by clever predators, say experts. "These predators are particularly adept at reading children, at reading kids, and knowing what their vulnerabilities are," said FBI Deputy Assistant Director, Chip Burrus, who started the Lost Innocence project, which specializes in child- and teen-sex trafficking. Debbie's story is particularly chilling. Police say Debbie was kidnapped from her own driveway with her mother, Kersti, right inside. She was ... taken to an apartment 25 miles from her home. Police say her captors had put an ad on Craig's List. Shortly after the ad ran, men began arriving at the apartment at all hours of the day and night demanding sex from her. She said she had to comply. "I had no other choice," she said.