Captured: 'King of the Child Exploitation Suspects'

With the assistance of the Chinese government, U.S. law enforcement began tracking his movements, and identified an opportunity to arrest him on a trip he took to Hong Kong to meet his second wife, whom they also had under surveillance.

Freeman, a body builder, reportedly tried to escape arrest, injuring four officers in the process.

Billion-Dollar Black Market Industry

Child porn has emerged as a multibillion dollar black market industry, though "average people don't believe it," said Ernie Allen, president of the National Center for Missing and Exploited Children.

"The reality is, with the advent of the Internet, the problem of child pornography has exploded," said Allen. "There are more victims, the victims are younger, there are millions of people who are consuming, who are watching these images."

U.S. Marshals Director Clark noted that with technology's advances comes the downside that children like Kylie Freeman can be victimized repeatedly.

"Individuals like Mr. Freeman post pictures globally that are downloaded hundreds of thousands of times. [This] means that this image of this innocent child gets replicated and viewed over and over and over again," he said.

Criminals Close to Home

"I think the depravity that this represents is impossible to overstate," said Allen. But he said the scenario of a father victimizing his own child is an unfortunate reality.

"There's a myth here," he said, "and that is the myth of the stranger."

Allen pointed to NCMEC's data, which show that most child sexual exploitation victims know the perpetrator of the crime -- at least 35 percent of them are the victim's own parents and 70 percent are other family members or someone close to the child.

"Overwhelmingly, the people who are victimizing America's children, photographing it and distributing it via child pornography are close to the child," he said. "Many of them are their dads."

"When you think of the nature of [his] crime, what [he has] allegedly done, and how it can be so harmful in this case to an innocent child, who was exploited in such a terrible way ... this case represents, for me, I think, one of the most despicable crimes I can think of," said Clark.