How he told him that america was under attack. Nightly news begins right now. Announcer from nbc news World Headquarters in new york, this is nbc nightly news with lester holt. Good evening. We start tonight with two urgent government warnings about the fire risk from samsungs new he is smartphone which is already under recall. The latest came this afternoon from a the Consumer ProductSafety Commission and from samsung itself, warning owners of galaxy note 7 phones to stop using them after a series of fires linked to the phones lithium ion batteries. The alert comes on the heels of a warning from the faa against using the samsung phones on board planes, where the consequences of a burning or exploding phone could be catastrophic. Tom costello with what consumers need to know. Reporter with 2. 5 million phones under telling consumers to turn off their phones and dont use them. This happened with my note 7. Reporter the lithium ion batteries can explode and catch fire. The owners of this jeep say the fire started when they left the phone charging inside. Tonights new warning from the Consumer Products Safety Commission power them down, stop charging or using them. Quote, when these batteries overheat and burst, the results can be serious. The new alert co less than 24 hours after the faa warned anyone who flies, keep the phone turned off in flight, dont charge the batteries on board, and dont put it in a checked bag. The fear is that this thing may catch fire. And trying to put out a lithium battery fire on an aircraft is very, very difficult. Reporter this faa test demonstrated how quickly a lithium ion fire can spread. Responsible for a cat traffic fire on board a cargo plane in philadelphia and the loss of another ups plane and crew if because of the fire risk. Lithium ion batteries are everywhere, from correctly phones to laptops to tablets. There are more batteries. There has to be a rising risk here. Reporter the Consumer ProductSafety Commission is working to elevate the recall. When that happens, the faa would go one step further and actually ban the galaxy note 7 on all commercial planes. Samsung insists safety is a top priority. Its rushing replacement phones to market. Lester . Tom, thank you. Tonight, condemnation and concern around the world as north korea claims it just conducted its most powerful nuclear test yet. Moving toward its goal of developing a long range nuclear warhead, perhaps capable of hitting the u. S. Nbcs bill neely has details on the test and the swift carried out his Second Nuclear test in eight months. This one the strongest ever, triggering a 5. 3 earthquake, drawing global condemnation. Theres anger at the u. N. I condemn in the strongest possible terms. Reporter and fear in the u. S. That hes edging towards a Nuclear Missile that can hit america. Probably by the end of the first term of the person were electing this november, they are going to have the ability to put Nuclear Warheads on missiles that can reach the west coast of the United States. Reporter so how can the u. S. R . Underground Nuclear Sites is risky and unlikely. A cyberattack is an option. Tougher sanctions are possible too. But they didnt stop this test. More isolation . North korea is already isolated. Only allied china could punish it more. But south korea says it shows hes mentally under control, struggling to keep control, executing dozens of generals. The Nuclear Program is all about power and regime stability. With the purges that regime doesnt feel fully secure. Reporter president obama says there must be serious consequences for this test. But kim jong un seems not to care, projecting power, provoking, and so far paying no price. Bill neely, nbc news. Theres breaking news tonight from geneva where the u. S. And russia are announcing a plan to reduce the violence in syria. Our chief Foreign CorrespondentRichard Engel is there at the talks. Richard, this is all happening right now. What can you tell us . Reporter good evening, lester. Secretary kerry called it a possible turning point in the fiveyear war in syria. He along with his russian counterpart made this announcement here in geneva. And he said that syrians are now facing a choice between war and peace. Specifically, he called starting on september 12th for all a nationwide ceasefire. He said the russians would work on the regime so that they would stop their indiscriminate bombings on civilian areas, and the United States would work with opposition groups to prevent them from attacking regime forces. That this ceasefire nationwide, if it were to last for a test period of seven days, secretary kerry said it would lead to even closer Russian Coordination with the u. S. And Russia Fighting against isis and an al qaeda affiliate together, lester. Richard engel now to shocking photos released by an Ohio Police Department that show the impact of the exploding heroin epidemic on children. Earlier this week we told you about hundreds of overdoses in a couple of weeks in the cincinnati area. Now these photos from the other side of the state. Adults unconscious and incoherent in the front seat with a child in the back. Nbcs blake mccoy has details. Reporter the a couple, unconscious from a suspected drug overdose, while the womans 4yearold grandson sits helpless in the back seat. Officers in east liverpool, ohio, want the photos to be a wakeup call. When you see that, the shock factor, you get that lump in the throat. Its sad, especially when you have children of your own. Reporter police say the couples car narrowly missed a group of children james accord and rhonda pacic have been arrested. The child taken into protective custody. When you see Something Like that, you put a face to it. Its just an addiction. Its terrible. Reporter all across ohio, heroin overdoses are spiking. Over the past two days in cincinnati alone, 76 overdoses. Every month, 92 on average, double the rate from last year. Nan francs has been an we have a long history with the opiate crisis, the kind of pill mill industry was very big in southeastern ohio. Reporter addicts are increasingly ending up on this doctors autopsy tables. Heroin now being laced with deadly synthetics. Its very concerning that people are pushing the envelope to the next high, the biggest high, the maximum hi through the horror of dictation too. Tonight, there are calls for ohios governor to declare a Public Health emergency and quadruple the number of treatment options. Right now those seeking help are often put on wait lists, lester. Blake mccoy, thank you, blake. To president ial politics now, Hillary Clinton meeting with her National Security advisers today, launching an effort to donald trump on the defensive over his continued embrace of vladimir putin, this time on russianowned tv. Weve got it all covered starting with nbcs andrea mitchell. Reporter tonight Hillary Clinton trying to act president ial. A photo op with National Security experts on what she calls her top priority, defeating isis. Republicans like george bushs Homeland Security secretary michael chertoff. By videoconference, former cia director david petraeus. When it comes to questions of war, peace, and the safety of our country, we cant let Party Affiliation stand between us. Reporter a deliberate contrast to donald trump. But with the p tightening, a new ad portraying clinton as a problemsolver. It takes democrats and republicans working together. Reporter and another attempt to reintroduce the softer side of clinton. Trying to fix a problem first identity was president , advising the first lady, you can show more flashes of humor and reveal more about yourself. Now decades later, clinton posting about being heckled by male students when taking her Law School Aptitude Test at harvard. I know i can be perceived as aloof or cold or unemotional, but i had to learn as a young woman to control my emotions. Plus last night a speech on faith. Ive made my share of mistakes. I dont know anyone who hasnt. Her next challenge, i think, is to connect with voters. Its to let them see her and come to feel that shes a likeable person. Reporter a twopronged strategy. A kinder, gentler Hillary Clinton, and, and the campaign hopes, a credible commander in chief. Andrea mitchell, nbc news, washington. Reporter im Hallie Jackson in washington. Today donald trump tried to turn out evangelicals. Hes been a leader far more than our president. Reporter tonight, Hillary Clinton pouncing. Its not a serious president ial campaign. Reporter even some republicans skeptical. My hope is that Trumps Campaign manager insisting what sounds like praise for putin, wasnt. Not so much praising him as saying hell work with people. Reporter the gop giving him cover. You think hes a better leader for russians than president obama is for americans . Does that not give you cause for concern . Its still russia, i raising more eyebrows, appearing on russian tv. The candidate thought that interview was for larry kings podcast, his campaign says, not the kremlinbacked network. Through it all, trump is keeping it close in new polls out of this is not something thats going to rise to keeping them up at night. Reporter still polling on putin shows fewer than one in ten americans view him favorably, perhaps putting trump at odds with those he wants to win over. Hallie jackson, nbc news, washington. Still ahead, tonight the infamous murder mystery thats baffled the country for two decades now, the killing of Jonbenet Ramsey. Newly revealed details, including what the 911 operator heard. We approach the crimes 20th anniversary. A rescue of tourists trapped in were back now with a nbc news exclusive about one of the countrys most infamous murder mysteries. The death of Jonbenet Ramsey inside her parents home in boulder, colorado, the day after christmas 1996. Now 20 years later were hearing from the 911 operator who answered the call about what she says she heard when patsy ramsey thought she hung up the phone. Here is nbcs josh mankiewicz. Reporter just hours after the 911 call, jonbenet was strangled to death in the basement of her familys home. Kimberly was the 911 operator who answered Patsy Ramseys call on december 26th, 1996. Shes speaking on camera about the end of the call. You could hear the phone go to the cradle. You could hear it didnt hang up. Patsy . Reporter she could still hear patsy ramsey talking but not to her. Theres three different voices. Reporter john and patsy ramsey and their 9yearold son burke were at home. Boulder pd detectives suspected the ramseys were lying about jonbenets death. When questioned by investigators, burke admitted to being awake but said he never went downstairs. I was afraid. Reporter a grand jury heard all of this and in 1999 recommended indictments for child abuse resulting in death and accessory to first degree murder, and named both parents. It literally took everything that i had to keep that a secret. Original case detectives. This is her first tv interview. The grand jurors heard the evidence and came up with that conclusion. And i would agree with their conclusion. Reporter but the da at the time decided not to file charges, believing there was not enough evidence to go to trial. The ramseys have always maintained their innocence and said that dna from the crime scene proved an intruder killed their daughter. Patsy ramsey died in two years later, the new da, mary lacey, wrote a letter exonerating john and patsy ramsey. The question of who killed jonbenet is still unanswered. Well have more on a special hour of dateline who killed jonbenet, tonight, 9 00, 8 00 central here on nbc. When we come back, sudden impact, a shocking moment caught by a gas back now with high anxiety in the french alps as choppers race to rescue passengers including americans trapped at 12,000 feet in cable cars. Strong wind reportedly crippled the system. The majority of people were rescued yesterday. 30 had to wait overnight for help. Caught on camera, a shocking crash in a connecticut gas station. An suv rams through the door and takes the clerk out. The clerk was reportedly seriously injured but is expected to recover. The driver is said to have mistaken the gas pedal for the brake. A live look this evening at the 9 11 memorial reflecting pools in lower manhattan. This sunday will mark a live look this evening at the 9 11 memorial reflecting 15 years since the twin towers which once stood on that site along with the pentagon and the pennsylvania countryside were struck by hijacked passenger planes. 2,996 people died in the attacks. Now looking back we can see and reflect on just how much our country has been reshaped by the events of that horrible day. Its a question we still ask. Where were you that day . Have javier altamarano was 13 and at home in new york when america was attacked. Afraid to go out. Now 28 and in the army, hes about to deploy to afghanistan, 15 years after the war on terror began. Its a little nervewracking. But im confident its going to be a good experience for me. I can go there and help out with the mission. The continuing u. S. Mission in afghanistan that day changed all of us. It changed america. And it changed the world. Andy card was chief of staff for president george w. Bush at the time and was the one who whispered 11 words which would change the course of history. And i leaned over and whispered in his here, a second plane hit the second tower. America is under attack. President bush, after brief stops in louisiana and nebraska, returned to washington that evening. You got back to the white house that night . The fog of war was still real. There was a high degree of concern. And were there other attacks coming. He would do what the primary job of the president is to do, to protect us. The white house tapped pennsylvania governor tom ridge to fundamentally reimagine the nations security. Did you have any sense what that would entail . No blueprint, no architecture, no design. Agencies like the coast guard were realigned. Others were born, like the tsa. The department of Homeland Security was formed with secretary ridge at the helm. Americans came to learn the color coded terror alert system. Phrases like see something, Say Something became part of our vernacular. I think 9 11 elevated the role and responsibility of literally hundreds of thousands of americans who go to workry their job prior to 9 11 was to keep us safe, but there was a new level of alert and commitment in a post9 11 world. That world included fighter jets patrolling our skies, long Airport Security lines, patdowns to enter stadiums. Today Osama Bin Laden is dead. And we speak of the isis threat, not al qaeda. And americans like specialist altamarano are still deploying to afghanistan. My biggest motivation is my wife and my family. I do this for them, to protect them. My predecessors risked about where we were that september day. We also ask, are we safer . You were there at the beginning. 15 years later you look around you. Do you feel like we all are still living right now our big story on 12 news at 6 00 around the country, people are preparing to pay tribute as we mark 15 years since the september 11th attacks. For many younger people what happened to our nation is either barely in memory or something they are just now learning as part of our history. Ryan cody talks with schoolteacher about how they explain the importance of that day. Ryan . Reporter 15 years ago, High School Freshman and sophomores were not alive in 2001 having zero emotional connection to the tragedy and only really knowing what happened in reading a history book. Theres an exam next week in mr. Silvas fourth period history class. Break from his lesson plan on the revolutionary war. In 2007 i asked students what was it like for separate 11th . There would be a really great discussion. A couple years ago that fell off until last year where no one raised their hands. Reporter never forget, the phrase that became synonymous with remembering those who lost their lives on 9 11. As those memories begin to fade, the challenge becomes keeping them alive for the next generation. It was easy for people to never forget because it was etched in our memories. Forget because they cant remember. Reporter many who lived through the attack are becoming desensitized. Whether its a walmart using 9 11 as a way to sell soda or a twin towers sales event. Well never forget. Reporter time is making some of us forget the anger. And patriotism, 9 11 spread throughout the nation. A national tragedy. Reporter what about tomorrow or 15 years from now