"Within minutes, he gets contacted, usually with the phrase 'A-S-L,'" Christianson said. That translates to age, sex, location in Internet lingo.
"Hedrick never makes first contact," he said. "Instead, the offender always contacts him. They are looking for these girls."
What should happen, after Hedrick says that he is 13 or 14, is the man should back out of the conversation, Christianson said.
This help? It sounds as though they are pretty careful to not cross the line to entrapment.