>> trafficking is the manufacturing of children for the sex trade. they are just getting sold and passed on from one exploiter to the other. and a lot of times it's because they don't know a life after this. >> those exploiters can come from anywhere. is there such thing as trafficking occurring in airports? >> is it the world's busiest airports which lends to us being one of the hubs. that man can get on that computer anonymously, say i'm coming in to go have sex with this child. he'll fly in on a 3:00 flight meet the child at 6:00 and be gone on the 8:00. how are we to ever find them? how are we to ever know who they are? >> earlier we spoke with lisa c. williams whose work is featured