Page 20 - Dateline S News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Walker tells me he brought a change of clothes in case he spent the night. a camera and condoms. and you're here to meet a 13-year-old girl who is home alone after a sexually charged conversation in a chat room with her. >> yeah. that's not good. >> all right. well, there's something you've got to know. i'm chris hansen with "dateline nbc." we're doing a story on adults who meet teens to have sex. and if there's anything else you want to tell me, now would be a good time. otherwise, you're free to walk out the door. we asked walker to leave through the back door, because out front is our next ...

Thanks for the offer, but i'm leaving. >> you scooted on out of there. >> oh, yes. >> here's something i think you'll also find as a surprise. i'm chris hansen with "dateline nbc" and this is one of our "to catch a predator" stories. have you seen the show before? >> i have. >> you have. how many times have you seen it? >> a couple dozen. >> a couple dozen. and what do you think of the stories? >> they're pretty incredible. >> pretty incredible. did you ever think you would be on one? >> no. >> outside, the long beach police are getting into position. >> you're good to go. and perhaps because ...

So, our decoy is now waiting for him in the park. so are "dateline's" cameras. he is 48-year-old frank sierras. back in 2004, before "dateline" was working with perverted justice, sierras using the name pitbulldavid2001 chatted online a decoy who said she was 13. he sent pictures of his penis and told her -- >> i want to make love to you. i know i will say i love you when i am making love to you. >> back then, perverted justice put his chat on the website, but he was never charged with any crime. then two years later, during "dateline's" investigation in petaluma, california, he began another ...

According to his chat, sierras is driving an suv. but suddenly, he drives up in a different vehicle and approaches the decoy. >> hey, i look this way because that's what i am, so -- >> the conversation is hard to hear, but he is clearly suspicious. the decoy's hair looks different from the online photos sierras saw. >> i dyed my hair. >> as i walk over to talk to him, he spots me and runs. >> he's running. >> the police make their move. >> get down! get down on the ground! get down on the ground! >> stop it. >> all right, all right. >> just do what we tell you. >> who are you? >> we're the pol...

Online for more than three weeks, typing well over 50 pages of chat log, saying things to a girl he thought was 14 like, remember, sex is a little nasty. i don't want your dad to find stuff in his bed. >> rolando, what should happen to you? >> i don't know. oh, my god. >> don't you see something wrong with a grown adult, a sergeant in the army, coming over to meet a 14-year-old girl? >> i will get counseling, sir, i swear. >> why should i believe that? >> i promise you. with my life. >> but what happens to him legally is not up to me. his sexual online chat with someone he thought was 14 is en...