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Plus, your choice of hbo or multiroom dvr Service Included for 2 years, all with a two year agreement. And Verizon Wireless customers can stream tv on the fios mobile app, datafree. Hurry and switch now, this offer ends november 4th. Go to getfios. Com good evening. Thanks for joining us. This week new york was once again hit by terror, the most deadly attack here since 9 11. Tonight we explore a terrifying reality, that some of the most dangerous threats to our country could come from within. Abcs diane sawyer investigates isis recruiting tactics, revealing their shocking reach into american households, turning impressionable young people into deadly weapons. Reporter this week in america theres been a violent reporter a 29yearold man who emigrated to this country seven years ago takes a truck and mows down more than 20 people on a bike lane. On his phone, 90 isis propaganda videos. It seems for years now we have been talking about men like these, terror, radical jihad. But tonight in this report we are tracking something different. Trying to learn how isis is now reaching into all kinds of american homes. Muslim, nonmuslim, urban, rural. There are 1,000 terror investigations under way, reaching across every single state of the union. And 40 of those charged in supporting isis terrorism did not grow up muslim. Which brings us to the young man who lived here in rural North Carolina. Police what is your emergency . A desperate father called 911 about his son burning religious statues in their house. I need somebody as quick as possible. We have units en route to you. Stay on the line with me, okay . I dont know if its isis or what this is your son . Yes. Reporter you can hear that son in the background. Theyre going to throw me in jail my whole life and kill me. Why are you trying to say im a terrorist . Reporter a terrorist . Justin sullivan grew up as a boy in a catholic home with trophies, friends, a bedroom filled with childhood toys. His dad a retired marine captain rich sullivan. I imagined him joining the military. And following my footsteps. Reporter but his high school reported to the parents justin had violent fantasies in his writing and suspended him. They said he needed serious help. The parents sent him to a psychologist but admit they downplayed what they were hearing. As justin continued to isolate himself on his computer, obsessed with violent video games. And images of isis. Isis soldiers. Who would wear their socks above their ankles. He started doing that himself. Reporter the parents had no idea that their 18yearold son, alone with his computer, had reached out to isis recruiters. He sent a message. In less than 24 hours, a top captain of isis responded. Isis recruiters seemed to know exactly what to say to weaponize someone like justin. There is even a captured terrorism recruiting manual. In phrases from other isis cases we can see step one. If the target is alienated like justin, start with encouragement and praise. Like, welcome, brother. Blessings upon you. We know justin loves the video game call of duty. Isis has an idea, call of gee dahd jihad. Recruiters tell justin theres something he can do to be a real action hero, a celebrity. One night in december 2014 in what seems to be a practice run, justin puts on a ski mask and murders a neighbor with his fathers rifle which he hides. Police find the neighbors body but have no suspect. Then in a few months he tells his isis recruiter hes ready to go big. And isis says, make a videotape so they can be sure hes fame miss. Famous. Hes going to get an assault rifle. And slaughter people at concert in North Carolina, or at a club, but as the clock is ticking down his parents discover a package containing a gun silencer. I called the police department, i need to talk to somebody in homeland security. Reporter captain sullivan discovers the fbi was already secretly tracking his son because of that first call to 911. Agents descend on the house, arresting justin. He pleads guilty to terrorism and to the neighbors murder. His defense attorney argues justin is clearly mentally ill. He could very well be on the brink of schizophrenia. Reporter he has never talked about why he was trying to become a soldier of isis. Hello, this is a prepaid collect call from Justin Sullivan. An inmate at the county detention center. Reporter he knows weve been asking the question. He says isis gave him a place to belong. I saw it as like a brotherhood. Reporter his fantasies of heroism from the violent video games have become reality. It was like revenge. And you wanted to be like acknowledged by the islamic state. You want to be looked at as a hero. I wanted to be remembered. Reporter at one point he claims he wouldnt really have gone through with a mass attack but we wondered does that mean hes sorry for what he did . Why should i apologize . I got two life sentences. Whoser than me . Reporter mary mac cord, former head of the federal office that has prosecuted all 147 isis cases in the u. S. In the last two and a half years. Including the case of Justin Sullivan. I dont think Justin Sullivan cared anything about the religion. He thought that this was essentially a death cult. Reporter mccord says it might surprise you how many of the cases her office has prosecuted have little to do with twisted religious beliefs, more to do with young men and 89 are male, just feeling powerless. For your teenagers its just a few clicks away and most parents dont know. They have an entire chat room to give you information how to protect your computer from surveillance and the fbi. Reporter Seamus Hughes of George Washington university leads a program and group that tracks and analyzes extremists online. They just posted this . They just posted this five minutes ago. Reporter if you think smart, successful kids are somehow immune to the trap doors online, come with us to the federal transfer center in oklahoma city. There is someone who can answer questions about the story of two honors students from small mississippi towns. One of them a cheerleader, the other a soccer player. Through the door, mohammad daklala, a young man who once had a bright future. Had you ever been arrested before . No, maam. Never before. Nothing . No, maam. I mean, unless you count like car tickets. One of your friends was quoted saying, hes the guy who was never in a bad mood. That is true. Yeah. Reporter he is the son of a muslim father and a catholic mother who converted. He was a straighta student in graduate school, studying psychology, when he met his first real girlfriend. A superstar who grew up going to church on sundays. Her dad a police officer, her mother a school principal. Super smart, super intelligent. Always very polite. Jalen delshon young. She was so smart, top of her class, studying to an doctor. Reporter mohammad shyly admits she was his first real relationship. What was it about her . Well looks, one thing. And the next thing to look at is intelligence, really. Reporter so what happened . Jalen young has admitted in court that she was the one who became so unmoored, so overwhelmed with her premed studies, that anxiety and depression took hold. So she began to search for spiritual solace and looked at idealistic propaganda videos for isis. These videos are dangerously inspirational. If youre in a state of anger or state of depression, they really want to try to hook you in. Reporter but it was jalen herself who says she was the first one drawn to fundamentalist islam. She like the strict rules of behavior. She says she became convinced by isis propaganda that isis was misrepresented in the media. In a surprise, the smiling former cheerleader began wearing an hikab. She tells her boyfriend she wants him to watch propaganda videos and come with her to live in syria. He says, in truth, he just wanted to be with her. Are you saying you did this for love . Like blind love. But you knew. Theyre a savage organization. We took that to be like more of a biased view from the media. Did you really believe that . Look at your 4. 0 average. I couldnt even think straight, to be honest with you. You were willing to kill americans . No it was more just leek, you know, ill want to help as much as i can. Reporter he told me he hoped maybe he could work in the pr department. Then one day two years ago, after months of planning, these two College Students packed their bags and headed to the Regional Airport to travel to the middle east. What do they bring with them . Craft supplies, a scrapbook, a bar of soap, a pack of starburst minis, and his nintendo. But it turns out their isis friends online were in fact undercover agents for the fbi, who moved in and arrested them. At sentencing, Defense Attorneys argued these were just smart kids who had fallen into depression, confusion, gotten lost in the internet. But the prosecutors argued, not so fast, that these were kids who knew what isis does and that they were prepared to join up. Both of them expressed deep remorse, but tonight jalen young is spending 12 years in prison after prosecutors argue she instigated the idea. We asked to talk to her, she declined. Mohammad daklala is now in for for eight years. If you have a machine 24 7 whose whole purpose is to recruit any child is vulnerable. Any child, any religion . Anyone is vulnerable. The idea that you would go to join someone who engages in beheadings . That you would suspend Critical Thinking about that . They can dismiss the vile and Disgusting Things that they see, because somehow it all fits into the narrative. Reporter tonight, a father from North Carolina has a warning for parents. Remember, he is a marine who fought the enemy abroad. Here i am defending our country against domestic enemies. Which so happen to be my son. I didnt think it was this close to home. Reporter a father awash in regret. I think we failed. Our thanks to diane sawyer and her team for that compelling report. Up next, hes used to painting stars. Now hes painting a building. How this l. A. Street artist is on his way to a Guinness World record. Depend real fit briefs feature breathable, cottonlike fabric. In situations like this, theres no time for distractions. Its not enough to think im ready. I need to know im ready. No matter what lies ahead. Get a free sample at depend. Com. Yep, and my teeth are yellow. I mean i knew they werent perfect, but, ugh. 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They gave out billions in Corporate Tax breaks. Millions to whitewash the bridgegate scandal. Millions more wasted on empty office space. We got stuck with the bill. Property taxes up. Train and bus fares up. College tuition up. Womens healthcare funding eliminated with christie and guadagno were paying more and falling behind. Four more years of kim guadagno is unaffordable. It all started when sophia stopped into marshalls and found a mug for surprisingly little green. She paired that with some succulents. And suddenly something clicked. That surprise led to a stylish wood mirror, soothing lavender oils, a party llama. Or is that an alpaca . Super soft towels, and an enchanting vase that magically tied it all together. She arranged it all into the greatest guest bathroom ever. Did sophia expect to get so much bang for so few bucks . No. But great things happen when you choose surprise. Marshalls. Your surprise is waiting. He stood up to north jersey special interests nobody delivers more for south jersey than steve sweeney. But great things happen when you choose surprise. To increase funding for our schools. He stopped christies commuter tax, saving south jersey residents over 200 million dollars. And he led the charge to pass paid family leave. Aarp applauded sweeney for freezing property taxes for seniors and cutting prices on prescription drugs. I got to take my hat off to him. Hes a man of his word. Steve sweeney. Because theres more work to do to get south jerseys fair share. Hes determined to break the Guinness World record for the largest mural painted by a single artist. Street artist Robert Vargas is using a 60,000 square foot side of a building as his canvas. Why . Heres abcs Elizabeth Vargas. So many things can go wrong up here. So i have to be very, very focused and very, very sharp. Reporter at the corner of fifth and hill streets in downtown los angeles, something unprecedented is happening. Suspended high on a scaffold with his cans of paint and an array of brushes, a single artist is trying to do something no one has ever done before. We want for it to be the biggest record. Reporter Robert Vargas. No relation. Hes been working every day to have three months painting the largest mural in the world by a single artist. Im going through tons of brushes. Reporter each morning on his way to try and set the Guinness World record, he greets the denizens of this gritty block. Many of whom have spent weeks watching him work painting the 60,000 square foot creation he calls angeles. How big a brush do you use . Sometimes a broom. A broom . A broom. Reporter he has spent hundreds of hours alone on his scaffold with his brooms and brushes. A far cry from his usual highenergy performance painting. Everyone, give it up for annabel reporter vargas became famous for edgy portraits, part street art, part high art, part mystical experience. You can find him painting on his canvas on the ground in cities across the world. Communing with stars like kate hudson, william macy, howie mandel. As well as residents of skid row. All of whom happily sit for the vargas experience. It usually happens with a crowd leaning in. The spectacle of vargas at work as riveting as the painting he creates. Music playing loud. No talking ever allowed. And its all over in minutes. One mans glimpse into another mans soul, he says. All rendered in chalk and acrylic and water. Its a very intense sort of dance. I use a variety of different mixed media. Charcoal to ink and enamel paint, oil bar sticks, water, brushes, tease things. I saw you pour water on one. And i nearly grabbed your hand to say, youre making a mistake, you dont mean to do that. Reporter his talent of portraits vargas said grew out of a need to prove himself as a young artist. When i was in the fourth grade, lost a drawing contest because the judges thought that i had an uncle that lived at home and did it for me. Really . It was that experience that also was a little bit of a birth of me painting live. Reporter while his portraits can take just six minutes, the mural will take six months. The biggest challenge, painting a scene he cant see because hes so close. On a 14story building, when youre a foot and a half away from the wall, no use of grids, no use of prodirections, no use of stencils, all freehand with a brush. Its very challenging. For the nonartists in the audience, explain what that is. Typically if youre using if youre painting on a really large scale, youd like to grit it out the way the old masters did. What did michael an gel although do at the Sistine Chapel this. Grit it out. He made his initial drawings and studies and created grids to map it on the ceiling. Why do you do it freehand . I trust my intuition. Reporter the mural is an homage to the people of los angeles. Whats the message behind the mural . Unity. Hope. Especially right now with the current climate of whats going on in the world. The anchor for the wall is a tungava indian girl, theyre the original people that inhabited the l. A. Basin. Reporter a salute at a time Race Relations are tenuous and tested. The placement of this wall is one that will reach two different counterpoints with the social and economic classes of los angeles. My inspirations and my friends are coming in all different shapes, sizes and colors. And i want to celebrate that. Reporter the project is in the shadows of the glittering new high rises and just above the nations largest homeless population. Its a wall thats meant to reach everybody. And connect with people. Show that the Homeless People are also important and significant. Why do you do that . Because theyre part of my community. I dont see any separation between where they are and where i am. Reporter for nightline, im Elizabeth Vargas in downtown los angeles. Up next, the Houston Astros are on the march celebrating a world series victory. Whoa the mercedesbe