Has full details. Reporter stunning new video capturing a trump supporter sucker punching jones in the face. The officers escorting jones away last night. Jones yelling at the jeering crowd before he was blindsided. Get out of here. Go home to mom. Reporter sheriffs deputies walking right by the attack, instead going after jones. I turned. As soon as i turned he hit me dead in my eye. Reportete 78yearold john mcgraw was unrepentant unrepentant. He deserve it. The next time we see him, we might have to kill him. Reporter today he was arrested and tonight the Trump Campaign tells nbc news the incident was unfortunate, that they have no control over the supporters behavior and take significant measures safe. Its exactly the kind of behavior trump has encouraged at his rallies. Anybody . Get out of here. Id le to punch him in the face, i tell you. I love the old days. You know what they used to do to guys like this in a place like this . They would be carried out on a stretcher, folks. Knock the hell i promise you, i will pay for the legal fees. I promise. Reporter tonight new allegations that hit closer to home for the campaign. Trumps Campaign Manager accused of roughi up a reporter. This afternoon, mimhelle fields from a conservative website showed bruises after a fight she said he nearly pulled her down by therm tuesday night. The Campaign Said the false. Writing no other outlet a reporter witnessed or that transpired that evening, and questioning whether fields accusation is part of a lger exaggerating incidents. Tweeted, were calling b. S. On michelle fields. A Washington Post reporter said he witnessed the whole fields version of the story. Theres also reportedly an audio recording of the incident that has not been released. All this sure to come up in tonights debate. Peter alexander, thank you. We want to turn now to our political director, chuck todd. Chuck, what do you make of this . Well, i tell you this, Donald Trumps been playing with fire for some time. He does take his c owds and he fires them up. And sometimes its a positive reaction he gets, and sometimes its negative. He can be very mean to the proteststs as peter pointed out, very vicious, frankly, in call out the press corps so he caningle out individuals. This has been a concern. This has been a concern of mine, frankly, with just the press corps and others that are there. That said, look, we know politics has been messy in this country for hundreds of years. So lets not pretend this is the first time that weve seen Something Like this happen. However, in this day and age of social media, it is the responsibility of the campaign, they cant violence thaha takes place, but they can help set the tone better. John mccain in 2008 at his ralliesd toward the end started to get a little raucous and rowdy toward the end, and he said, thats not right, thats not what you do. Donald trump at some point needs to take control of this situation, and do that at one of his rallies. Chuck todd with some perspective tonight, thank you. The death toll has risen to five in uisiana and mississippi, where thousands of families are evacuated as relentless floodwaters overwhelm cities and towns. One College Campus so waterlogged, that there are large fish swimming down the street. Nbcs Janet Shamlian is in the storm zone. Reporter a handful of children and their mom. Among the hundreds of highwater rescues in and aroun boser city, louisiana. Ater just comes so understand that. Reporter its been rainingonstop for 24 hours. At this home, four women and six dogs. Called the sheriff. They said they would send somebody. Reporter these are the hardest hit areas, accessible only by military style trucks. Its beyond beliefow much of this community water. Weve been driving National Guard for about 20 minutes now, and all of it looks just like this. Relentless rain has swamped the region. A state of emergency in 22 parrishs, entire communities devastated. Louisianas governor warning drivers of ongoing danger. We have more road closures than we have signage to mark them. So we need people to be very, very careful. Reporter more than 20 inches of rain in some areas. Fish swimming alo sidewalks in monroe. Beyond louisiana, 12 and warnings. No relief for the weekend. They said it might saturday. Reporter whether horses shes cold. Eporter or a frightened child, saving lives has become fulltime work. Dozens of schools in once again today. And tonight, a bit of a beprieve here. Raining. But forecasters say unfortunately this is lester . All right. Janet shamlian, thank a manhunt is under way for two sususct in a backyard massacre in the pittsburgh ea. Five people were killed at a family party. Amonghe victims, a pregnant woman, and the motive remains a nbcs blake mccoy has the details. Reporter a Backyard Barbecue turned horrific murder scene at a Family Gathering last night near pittsburgh. Five adults killed, three others injured while cooking out and playing cards. It was boom, boom, reporter among the their mother Jessica Shelton today struggling for words. It just breaks my heart. Reporter one of her children was eight months pregnant. The medical examiner adding that unborn count. It was calculated, it was planned. Its just a brutal Reporter Police say the first shooter approached the backyard and herded porch. Thats where a second shooter with an ak4 was waiting. He then shot the victims in theead execution style. Neighbors are in disbelief. Bad for anyone to mothers being slaughtered like this, it takes it to another reporter the family says four Young Children were inside the home at the time, one watched as his mother was shot dead. I got the emptiest feeling inside. But i love my grandkids, so thats my grandkids. Proert police did find physical evidence here at the home. They hope will help them identify one of the killers. Tonight both of them are on the run, and a motive is unclear. Lester . Blake mccoy, thank you. Night in washington. The white house abuzz amid a starstudded state dinner to welcome the young new canada, a leader who carriesne of the most famous political names in the history of our northern neighbors. Nbcs ron allen on the diplomacy and the excitement. Reporter today at the white house, president obama welcoming canadas obama, Prime Minister justin true doe, the head of state turning heads. Ive never seen so Many Americans so excited about the visit of a canadian Prime Minister. Reporter just 44, with a young family, stunning the world with his victory last november, following the path of his faer, pierre trudeau, justin, a former boxer, now a do you think hes dreamy, too . Is that a word youd use . I might. I might use dreamy. Reporter emily covers t t d. C. Social scene for the Washington Post. The same sort of celebrity culture that surrounded obama, youre seeing that with the Prime Minister. Reporter trudeau has jumped in the campaign 2016, dubbed the antitrump. Inviting americans who flee if trump wins to canada. But today he would not take sides. I have tremendous confidence in the american people, and look forward to working with whomever they choose t t send to this white house. Reporter a state dinner, 200 guests, celebrities like Ryan Reynolds and blake lively. Serious issues like trade,efeating isis on the agenda. Graying elder statesman passing the torch to a new star on the world stage. Ron allen, nbc news, the white house. Now, a purported secret files a aear to have identified identities of thousands of isis fighters. It comes from forms a lot like job applications stolen from isis. And its giving us a rare look at just who is w lling to fight and die for the isis cause. We get more from nbc news chief Foreign Correspondent richard engel. Reporter isis is fiercely protective of its secrets, and defectors, if caught, are generally executed. So this apparent leak may be a sign isis is starting to lose control. The German Federal police has already said that the documents appear genuine. But its an enormous and unprecedented trov of information, which experts are still sifting through. I think they probably are authentic, these documents, because they contain a great deal of detail thats been verifiable, can be verified. Reporter there are thousands of these forms which carry the isisisseal, and list detailed information including their names, nationalities, and whether they chose to be fighters or suicide killers. In a preliminary review of the documents, which date back to 2013 and 14, we identified six that name americans. Including one Douglas Macarthur mccain from san diego, which nbc news first reported was killed two years ago. The name on the form is not a perfect match, but his date of rth and hometown are. Who the recruiters were. So to me, that seems to be the single most important and significant thing. Reporr this syrian man said all this information was on a memory stick he stole from a senior isis commander, and then smuggled out of syria. I put it in my babys diaper, he said, because i knew they wouldnt search there. We met him in turkey where he is now in hiding. He didnt tell us his to be called muhammad. Why exactly did you steal it . I took the memory stick so tt one day i would be able to expose isis, he said, cause i knew it had Important Information on it. He said he joined isis early on, and so was a trusted member of the groups internal security service. Disillusioned. I saw rape. I saw them butcherin children in front of said. Some analysts raised doubts about the awe authenticity of the documents. Two Security Experts told us they do appear genuine. Lester . Richard engel, thank you. Still ahead tonight, fight on a flight. A brawl breaking out on a packed airplane caught on camera. What the airline said passengege were doing onboard that triggered all this. Also, the dangers of springing forward. Why turning the clocks ahead can increase Certain Health risks, it comes when your Insurance Company says theyll only pa three quarters of what it takes to replace it. What are you supposed to do . Drive three quarters of a car . Now if you had Liberty Mutual new car replacement, youd get your whole car back. I guess they dont want you driving around on three wheels. Smart. With Liberty Mutuall new car replacement, well replace the full value of your car. See car insunce in a whole new light. Liberty mutual insurance. At body aches . What knee pain . What sore elbow . Advil liquigels make pain a distananmemory nothing works ster stronger or longer what pain . Advil. Jake reese, day to feel alive jake reese, day to feel alive pet moments are beautiful, unless you have allergies. Then your eyes may see it differently. Only flonase is approved to relieve both itchy, watery eyes and congestion. No other nasal allergy spray can say that. Whwh we breathe allergens our bodies react by over producing six key inflammatory substances that cause our symptoms. Most allergy pills only control one substance. Flonase controls six. And six is greater than one. Complete allergy relief or incomplete. Let your eyes decide. Were back now with the wild brawl aboard a packed flight. A melee among first fistthrowing passengers caught on camera, right in the middle of the aisle. It left the surrounding passengers shocked and had the police and fbi scrambling to respond. Nbcs Miguel Almaguer has the tale of the tape. Reporter passengers on flight 141 called it fight night. Punches. Reporter a brawl five female passengers. The stewardess even got punched. D. Thats when i stepped in. Reporter the throwdown came just after touchdown. A Spirit Airlines flight fromm baltimore to los angeles, ending in hairpullinging and flying fists. Two customers appeared to be intoxicated, playing loud music on a boom box. Other cusmers asked them to turn down their music. The ladies refused and said, what are you going to do . A fight broke out. Police boarded the plane. All five women detained then released. The friendly skies, not so friendly ymore. Our aircrafts are fuller than ever, people are closer together. The incidents leading to an air rage incident are higher than ever. Reporter a fellow passenger said he was drunk, to belligerent man refusing to leave his seat. Flight attendants say unruly passengers are there are fewer of us to deescalate the situation. Repepter an ugly problem becoming far too common. Miguel almaguer, n n news, los angeles. And we are back in a moment with huge fireball caught on camera thatocked the city in the midwest. ray id like to see more of the old lady. Id like to see her back to her more you know social side. vo pro plan bright mind promotes alertness and mental sharpness in dogs 7 and older. ray it was shocking. Shes much more are. jan she loves the food. ray she wants to learn things. The difference has been incredible. vo purina pro plan bright mind. Man dear mr. Danoff, my wife and i are now participating in your mutual fund. We invested in your fund to help us pay for a College Education for our son. Weve enclosed a picture of our son so that you can get a sense there are real people out here trusting you with their hardearned money. At fidelity, we dont just manage money, we manage peoples money. My belly pain and constipation . Ive heard it all. Eat more fiberf flax seeds. Yogurt. Get moving. Keep moving. I know been there, done that. My chronic constipation keeps coming back. I know. 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Fortunately no one was hurt. The cause of the fire is under investigation. Dont forget this weekend is when we turn thehelocks forward. That, of course, means we lose an hour of eep. But experts also caution that the switch to Daylight Saving time can increase the risk of heart attack or stroke for Many Americans. Nbcs erica hill explains why. Reporter its a with a big `ayoff. And a rude awakening. Losing that hour of sleep for Daylight Saving time each spring is more than tough adjustment. The two days after the clocks move forward, theres a spike in the number of heart attacks, strokes and vascular events that occur. Its a very real phenomena. Reporter Research Shows in the two days after we spring forward, heart attacks can surge as muchhs 24 . And for those over 65, the risk of stroke increases 23 . Biochemist martin young is an expert on the bodys circadian rhythm. In terms of biology, Daylight Savings time is a rrible thing. Reporter the abrupt change in the bodys timing changes the bodys chemistry, which can aggravate risk factors, increase Blood Pressure and produce more blood clots, makingg certain people more vulnerable. You would have to haha a condition such diabetes, in order to increase your risk of having a heart attack. There are certain things we can do to limit the risks. You should start now. Start going to sleep a little earlier every night beginning now and yll be ready. Also, exercise. Cut back on the caffeine, cut back on alcohol. And start destressing. Reporter the good news, come november, the hour we gain from falling back, lowers those same risks. Erica hill, nbc news, new york. When we come back, as the public pays last respects to nancy reagan, the stories bebend some of the most memorable he has a sharp wit. A winning smile. And no chance of getting an athletic scholarship. The best returns arent just measured in dollars. If youre taking multiple medications, does your mouth often feel dry . A dry mouth can be a side effect of many medications. But it can also lead to oth decay and bad breath. Thats why theres biotene, available as an oral rinse, toothpas, spray or gel. Biotene can provide soothing relief and it helps keep your mouth healthy too. Remember, while your medication is doing you good, a dry mouth isnt. Otene, for people who suffer from a dry mouth. Hey, jesse. Who are you . Im vern, the orange money retirement rabbit from voya. Orangeoney represents the money you put away for retirement. Hello, all of you. Get organized at voya. Com. What if one piece of kale could protect you from diabetes . What if one situp could prevent Heart Disease . One. Wishful thinking, right . But there is one step you can take to help prevent another rious disease. Pneumococcal pneumonia. If you are 50 or older, one dose of the prevnar 13 vaccine can help protect you from pneumococcal pneumonia, an illness that can cause coughing, chest pain, difficulty breathing, and may even put you in the hospital. Even if you have already been vaccinated with another pneumonia vaccine, prevnar 13 may help provide additional protection. Prevnar 13 is used in adults 50 and older to help prevent infections from 13 ststins of the bacteria that cause pneumococcal pneumonia. You should not receive prevnar 13 if you have had a severe allergic reaction to the vaccine or its ingredients. If you have a weakened immune system, you may have a lower response to the vaccine. Common side effects wewe pain, redness or swelling at the injection site, limited arm movement, tigue, headache, muscle or joint pain, get this one done. Ask your doctor or pharmacist about prevnar 13 tay. Finally tonight, thousands more pay their last respects to nancy r rgan on this final day of public mourning before her private funeral tomorrow. She leaves behind a life in pictures. Many of them snapped by pete sousa, the white house photographer for the rebgans and now the obamas, who shares the incredible stories behind t shots with our andrea mitchell. Reporter they are the iconic picture of a first lady. I liked her. A lot of people as nails. But as long as you were straight with her, she was straight with you. Reporter and a portrait of a marriage. They were exactly the same way together, behind the scenes, as they were in public. It was very much a very true love and companionship between the two of them. Reporter the man behind the camera, white house photographer pete sousa. Eyewitness to history from the frivolous in another 50 years, how will we explain this picture . Who is this man dressed up in his blue suit . Why is he wearing one white glove . Reporter to the royals. If you look close, she is blushing. Reporter to the personal. Mrs. Reagans recovery from Breast Cancer surgery. And the diplomatic. Summits that went well, and those like this one in iceland that went so badly, mrs. Reagan rushed out to greet her husband to make sure he was all right. And mrs. Reagan said to me, hows ronnie . How is he doing . Reporter pete sousas final trip with nancy reagan is when the family brought Ronald Reagan back to washington for his state funeral in 2004. As you look at that picture, shes talking to her husband. Reporter now back at the white house, as president obamas official photographer. But accompanying Michelle Obama to Nancy Reagans funeral. Youll be there to say goodbye . And to photograph. Thats what i do. Reporter capturing a first lady he followed in life, and now as she and her husband are reunited. Andr mitchell, nbc news. And that will do it for us on this thursday night. Im lester holt. For all of us at nbc night. Adam levine baby news. The big announcement from the voice star and his supermodel wife, now on extra. Adam and behati expecting their first child. When shes due, adams confession about a massive family, and how theyll make it work as she jets around the world. Kim kardashian, skintight postbaby body revealed. Sharon osborne today, why she took a jab at the queen of the selfies. Mamas looking good at home with the reagans. The new mansion built where ronald and nancy spent their happiest times. And former reagan wild child Patt Patti Davis today, revealing how she made peace after years of friction with her mom. There were a lot of peaks and valleys in there. Jennifer anistons sexy new photo i harpers bazaar, opening about her marriage to justin. Seven months in, how they keep things normal. And more breaking couples news. Tiger woods ex hot on the slopes with her billionaire man. Plus, can oprah pull off a giant surprise for these o