And cull nar eye worlds collide, but first, the nightline five. Ive had a lot of hondas. We went around the country talking to a lot of people who bought a ford. All wheel drive is amazing. I felt so secure. Thats the eco boost. The real image of ford is amazing. Just announced. Make the switch to ford and get 750 competitive owner cash at your local ford dealer. N evening. Thank you for joining us. Tonight multimillionaire robert durst is behind bars. The change in circumstance hasnt wiped the grin off his face. The real estate heir has captivated the country. Even after being charged with murder, his behavior continues to amaze. Heres matt gutman. Reporter today robert durst slumped in a patrol car and smiling. The prime suspect in a murder mystery, playing out in real life. Its based on ratings. Reporter authorities looking for clues, searching dursts condo after he was arrested in this hotel in new orleans saturday night. Many believe an hbo documentary was his undoing. After a while you start thinking you got away with it. Youll never be caught. Thats why he sat down and spock on camera. Reporter and tonight questions about his sanity as he was moved just hours ago to a Mental Health facility here in louisiana. That cruiser right there. Reporter like what could he have been thinking when he agreed to interview in the sixpart hbo documentary called the jinx. Was it an insatiable need for attention or was he looking to be caught . A suspect not once but in three separate deaths. Nobody tells the whole truth. Of. Reporter the documentary may now be crucial evidence in the case of the murder of susan berman who was shot dead in her Los Angeles Home in 2000. I cant discuss the specifics of the case. Obviously this is a case that is going to be tried in the courts and not in the media. I know theres intense interest. Obviously the documentary helped to fuel that. Reporter sunday nights final ep soid of the jinx revealed a bombshell piece of potential evidence. I want to ask you about the cadaver note. Reporter he was faced with handwriting analysis that may tie him to bermans murder. Can you tell me which one you didnt write . No. Reporter but perhaps more disturbing i want to go use the restroom. Reporter the shocking words he muttered into his microphone still recording in the bathroom what some might consider a confession. What the hell did i do . Killed them all, of course. Reporter it is a mindblowing turn in the increasingly strange story of robert durst. The wealthy heir and subject of public fascination since 1982 when his first wife kathleen mysteriously vanished. Kathy told anyone who would listen, all her friends, if anything ever happens to me look to bob. Dont let him get away with it. Reporter she was a longtime friend of kathy durst. The moment she disappeared i knew bob had done away with her. I was hoping against hope that maybe he had just beaten her up and wed find her some way. But i knew she was dead. Did you have anything to do with the death of your wife . I dont know that shes dead. Do you think its possible that shes alive now . Its possible. Not likely. Reporter the case went cold until 2000 with new york prosecutors renewed their focus on durst in connection with his wifes disappearance. I began the investigation and started looking to all the people who knew robert durst at the time in 1982 when she went missing. Reporter susan berman had been working as dursts personal spokesperson. Then one night she was found murdered in her home. Authorities say she was scheduled to meet with him to talk about the Kathleen Durst case. Durst was sending berman money, 50,000 why was he sending her that much money at the time were looking to talk to her. Could it be to shut her up . Could it be to convince her not to say the truth . I feel terrible for susan. I was astonished that they were putting all this together that i did it or i caused it to be done. Reporter once again, durst evaded formal charges. In an attempt to escape the attention, he fled to texas, disguising himself as a mute woman. And in texas, dursts neighbor found chopped up into small pieces in galveston bay. At his murder trial, he admitted to killing morris black and dismembering the body but claimed it was in selfdefense. We the jury find the defendant not guilty. Reporter he was acquitted of murder. Somehow they bamboozled the jury into believing that durst and black got into a scuffle and that durst fired in selfdefense. And then out of fear of prosecution dismembered the body. It seems like a lot of people around robert durst have died violent deaths. Reporter durst avoided the public eye until 2010. He then contacted Andrew Jarecki with an irresisbling offer to tell his side of the story despite his lawyers advice. An interview is a big risk for you. Why do you want to do an interview . Reporter why would he take such a big risk . Robert durst sat down with hbo because he loves the adulation. He loved the cat and mouse aspect of talking about all of these people in his life that are either dead or missing. Thats why he did it. Reporter the only thing i can think of as to why he would do this would be that he loves the game. He loves the idea of walking right up to that line and seeing how far he can go. He just never imagined thered be a new piece of evidence. For him to have to address. Reporter while investigators search his apartment overnight, the new Orleans Sheriffs Department requested transfer for reasons of insanity and it was approved by the Louisiana State court of appeals. Indeed, his behavior in court these past days seems erratic. Before his hearing he was held here. When his name was called he went out here shackled in an orange jumpsuit, came to this spot and looked at the judge. The judge asked him questions. He answered yes or yes your honor. He will not plead insanity because that would mean he was insane at the time of the crime, in 2000. And likely at all times since then. Hes not going to argue that. Is it possible that he becomes so incapacitated, temporarily, now, such that they have to postpone the trial . I guess thats possible. But do not expect a mental defect defense here. Reporter tonight with robert durst housed in a Mental Health facility, the case growing ever more complicated. I would like to see bob put away, either in prison or in a mental institution. He belongs in one or the other for the rest of his life so he cant harm anyone else. He may look like a frail fellow but it doesnt take that much strength to pull a trigger. Reporter for nightline, im matt gutman in new orleans. Next our david muir is inside the nypd talking chokeholds and body cams to find out whats changed since garn ir chokeer choked to death. 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Get a fios triple play online at an amazing price, guaranteed for two full years plus, get a 300 bonus with a twoyear agreement. Call the Verizon Center for customers with disabilities at 800. 974. 6006 tty v it was the moment caught on camera that helped reignite americas long and bitter debate over race and justice. Unarmed eric garner sur onlied by police, choking to death on a new york city side walk. The glare of the National Spotlight folks on such fracases. Every member of the nypd is being retrained. Reporter tonight at this very moment, there is training under way in a remote building right here in queens new york. No one has been allowed in overnight. No one has been allowed in to seat training. This is the Police Academy for the nypd where they are retraining every officer on the force. 35,000 of them when theyre done. For folks at home this is about 9 00 now. Correct. Reporter were taken inside this gym where we see officers trained on the new take down thet methods. All of the moves avoiding the chokehold. Youre training all of these officers to stay away from the neck. Yes. Reporter and how important is that . Extremely important. Reporter important because the nation saw that video. The case of eric garner on staten island. He could be heard screaming i cant breathe. I cant breathe. Reporter the Police Officer was not indicted. Eight months after that incident we see the new recruits lining the hallways inside. The sun went down hours ago. But the training were about to witness is for the veterans on the force. When folks at home say i see them still using the chokehold, what do you say . Dont use it. Reporter theyre taught to go for the arm barhamer lock to protect themselves and the suspects. The chokehold was banned more than 20 years ago, but many agencies are still using it in this country. We want to promote what . Breathing. We dont want them to go into asphyxia. Reporter what does that mean . Any sort of compression on the chest. Reporter the officers are trained through the night in three shifts. We are with the west harlem precinct. This mother, 14 years on the force, raising two boys at home. Do they worry about you . They do. But they understand their mom has a job to do. Reporter do they listen to you . Yes, they do. Reporter and listen to that officer and other officers in a very candid moment revealing the last time they had this kind of training. Whens the last time you practiced techniques like this . Seven years. Three and a half. 12. 14 and a half. It should be more. It should be like twice out of the year. Everybody here is a volunteer. Nobody is going to volunteer in the street. Reporter how often are you taught go nowhere near the neck . You never know when youre going to be under stress. Somebody who doesnt want to be arrested it never looks pretty. Reporter this was in the works, but theres no question that the garner case accelerated it. Certainly in the aftermath of garner the Training Objectives was accelerated. Reporter they are adamant that bill bratten had ordered retraining months before the garner case. Officers at the Police Academy never get any physical training, Tactical Training after that first academy. Reporter after they walk out of the academy. First six months, thats it. Reporter they also have body cams. This view shows what it captures when an over walked up to a car window. Body cams have already been deployed in los angeles. And body cams were being days ago during this case. A suspect shot on the street. [ gunfire ] reporter what we see is the view captured by bystanders. Theres going to be someone in that neighborhood whos got their phone up and rolling. More than one, more than one. Cameras are here to stay. Reporter theyve already retrained the officers here at the six land brooklyn. You say the 67 anywhere in the city and what do they say . They say wow. Its a special place. Reporter roll call and we listen in. Youth robberies going on. Have a very safe tour. See you guys out there. Reporter we ride along with two officers first they try to get rid of drug dealers and thieves. And theyve had problems here with people trying to sell drugs . Yeah. Reporter they know the trouble spots. You know this intersection. Reporter at his post this officer acknowledged that the retraining changed the way he approaches people. How are you going to go about it, how you perceive things. Reporter for you it was a bit of a reset . Yeah. Reporter how difficult is it to change perceptions of the police . I dont even know if you really can change it as a whole. You can just change it one person that i encounter with. Reporter the optician who fixed their glasses after answering calls. Youve helped them out with both of their glass . Yes. Reporter we go back in after the police this time without anybody with the nypd. And we learn that even carl who has helped the police wants tactics changed after garner. More training the chokehold the most dangerous. Reporter and back at the academy, we were there, midnight as another group walks into room 405. Todays your first day. Reporter first day students many of them veterans who have been on the streets for many years. Reearning the publics respect. Reporter how important is that . I think right now its the number one issue. The nypd did not let our news team go with them on any of their calls. It will be up to the office and the veteran officers to decide if the retraining worked. Are they doing enough . Head to our Nightline Facebook page and join the debate. Next big ideas at south by southwest meet big flavor. Abc news nightline, brought to you by mercedes benz. The quietest or nothing. The sleekest. Sexiest. Baddest. Safest,. Tightest,. Quickest,. Harshest. Or nothing. At mercedesbenz we do things one way or we dont do them at all. The 2015 cclass. 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Tell your doctor if you have a history of heart or blood vessel problems or develop new or worse symptoms. Get medical help right away if you have symptoms of a heart attack or stroke. Decrease alcohol use while taking chantix. Use caution when driving or operating machinery. Common side effects include nausea trouble sleeping and unusual dreams. Im a nonsmoker. Ask your doctor if chantix is right for you. Around here, were all about fast. Thats why xfinity is perfect for me. With millions of wifi hotspots all over the place including one right here at the shop now we can stream all things fast and furious. Youve done it again, carlos with the fastest inhome wifi and millions of hotspots xfinity is perfect for people who love fast. Dont miss furious 7 in theaters april 3rd. Music etta james at last plays throughout sometimes, at last doesnt happen at first. Your dad just kissed my mom. Turning two worlds into one takes love. Helping protect that world takes state farm. Its not about hugging trees. Its not about being wasteful either. You just gotta find that balance. Where taking care of yourself takes care of more than just yourself. Lease an mkz hybrid for 299 a month, plus competitive owners and lessees get 1000 bonus cash only at your lincoln dealer. Youll be hungry after this one. Were going on a culinary journey to south by southwest in texas to find out what happens when you mix the biggest flavor with the brightest minds. Heres abcs Rebecca Jarvis. Reporter when it comes to barbecue, you dont mess with texas. Austin is known for serving up some of the best. Pit masters kicking up the spices to compliment one of americas favorite food groups. Barbecue sauce alone a 400 million industry alone. Thousands flock to find the next big thing in technology. So why not combine the two. Brain on barbecue. Reporter welcome to the lab that will map your brain waves while you dine. Using an hd headset to figure out whats happening to your brain when you eat barbecue. Reporter this device meant to pick up how much flavor i can detect in each dish. Now its time to dig in. A ton of these little squiggles. Its really high right now. Reporter im picking up on even more in the second course. Time for some coleslaw. And when i bite into the barbecue. Look at how high it is. Yeah yours is pre reporter g. E. Is hoping to use the data to see if science can find that perfect barbecue recipe. And im more than willing to help along their research. For nightline, im Rebecca Jarvis in austin. It was john Shelton Reaves who said southern barbecue is the closest thing we have in the u. S. To europes wine or cheeses. Drive 100 miles and the q changes. Tweet me whats your favorite. Plenty of coleslaw please kind of fell low. As always, were on line at abc news. Com. Good night, america. 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