American champion denied a record gold. And americas golden girls back in action. Nightly news from rio begins right now. Announcer this is nbc nightly news with lester holt reporting tonight from the olympic summer games in rio. Good evening. Another big night of competition getting under way here in rio soon. Well be getting to that shortly. Bunc unprecedented flood in louisiana. Despite a Welcome Break in the rain, new areas are under water tonight as floodwaters move downstream. In already hard hit places, displaced residents are returning home to see whats left. 40,000 homes are damaged, where in some areas only one in eight have flood insurance. Today the number of water rescues climbed to 30,000, while the death toll for the disaster reached at our coverage again for us tonight. Gabe, good evening. Reporter lester, another eight parishes have been added to the federal disaster declaration and we have seen rescue boats hurrying in and out of this neighborhood all afternoon, this as more communities downstream are preparing for the worst. Today in ascension parish, a frantic scramble, residents rushing to get out with whatever they could. Went from no water, 5 00 this morning and now you see it, three foot right up there by the house. Reporter more louisiana communities battling new flooding, dawna richardson hoisted to safety from the neighborhood she grew up in. She had just undergone cancer treatment, now this. Lived there all my life. I grew up here. Reporter the river is rising, before and emerging. More than 4 trillion gallons of torrential rain. All this water has nowhere else to go, so its flowing south, down these rivers and bayous, devastating more communities in its path. No time for us to relax and put our guards down. Reporter this baton rouge movie studio has now become a massive makeshift emergency shelter. When we leave, we will be replaced. Reporter the rising wates spared him and his family. We work every day to pay for what we got. If we lose it, we lose it. Reporter its the water already here that seems impossible to escape. Rouge, where bob gately is pushing away the debris around the door so he can see his home for the First Time Since the flood. Within minutes his worst fears are confirmed. Pictures of my daughter. Well never get things like that back. Up on the sidewalk now. Reporter his family had only minutes to escape saturday before five feet of floodwater rushed info his home of 15 weres. I dont know what were going to do i dont know where were going to live. Reporter many here remember a great flood in 1983, but the wave of destruction that washed through here this week was far higher. Gately feels fortunate because he was required to have flood insurance. In louisianas high risk area, 42 are covered for floods, in 12 . Gately who is a retired firefighter who helped survivors from Hurricane Katrina cleans up just one battered community, thousands of homes grappling the loss, while embracing what could not be washed away. Its going to be okay. And a stunning turn of another disaster playing out on the other side of the country to tell you about. Investigators now say a rapidly spreading wildfire thats destroyed over 175 homes and structures was in accident. Now a suspect is in custody facing arson charges. Reporter a new revelation in the blaze that destroyed hundreds of homes, the lake, a local construction worker arrested, held on a 5 million bail. Western able to arrest the suspect on 17 counts of arson. Cashlick has schad multiple run ins with the law. His neighbors are still shocked. That just blows my mind. Reporter homeowners forced to evacuate, angry that a commit such a crime. Cal fires dan berlin surveying the damage and now a crime scene. It only takes a simple spark, and once that spark occurs with these drought conditions, it burns very rapidly. Reporter today another fire erupts in southern california, more evacuations and strain on firefighters in the midst of a long and dry fire season. Firefighters are out battling seven large firefighters. This is not a game that lasts 45 minutes or an hour like a sports match. This is weeks, upon months upon years. Reporter the National Weather service issuing new red flag warnings, extreme fire danger over the next 24 hours is expected and lester, that is both for northern and southern california. Its a huge day for team usa on the beach, in the gym and on the track. We want to begin by telling you whats already been widely recorded the gold medal results in womens gymnastics floor exercise, as expected simone biles and aly raisman have taken gold and silver respectively. It comes as another american lost on the track, making a dive of the race. The 400 meter race is at the center of some controversy tonight. Theres the gun, theyre on their way. Reporter the 400 meter dash was over in 49 seconds. Felix, alongside the challenger. Reporter the foot race that ended with a header. A dive by miller for the line. Reporter that dive,. 007 seconds, the difference between silver and gold f Allyson Felix. It was a tough night, i hoped everything would have come together. But i left it all out there, and i kind of felt like i gave as much as i took. Reporter it took a photo finish to reveal who won. I didnt know i won until i heard my mom screaming. Reporter but just as fast as the race, Allyson Felix was robbed. I just tried to dive to the line and give it my all. Reporter felix has been on the short end of the dive before, when jennifer fandini fell to the finish in july. For felix, it was maybe. 001 too many. Reporter and when american a medal in beijing, he was hailed a hero. David neville diving to the finish line to finish third for the medal. Reporter nine time Gold Medalist carl lewis. I think thats part of the game. If john elway can dive into the end zone and win, why cant a runner do that . Felix got the win. That makes her the most decorated track history. A champion never down and never out. Allyson felix is still in the running for gold, shell likely take gold in one of two up coming relay races. Miguel, thank you. Tonight were learning more about the fbis interview with Hillary Clinton and why the feds recommend against it all comes tonight after notes were turned over to congress. The email controversy once again following her on the campaign trail. And we have the latest polls. Andra mitchell with late details. Tonight as Hillary Clinton was campaigning in philadelphia, fbi was sending congress notes from her interview to answer republican complaints that she should have been polluted. It wasnt just an reporter in a letter today, the fbi repeated that while clinton was extremely careless in handling classified information, they did not find gross negligence, which is why they didnt charge her with a crime. Let the public see what the fbi decides to let congress see. Reporter the controversy is hurting. In our new nbc News Survey Monkey online poll, only 11 find clinton trust worthy. Even some who are you going to vote for . Im going to vote for hillary. Reporter hillarys nine point lead over trump is holding. The only way we can lose, in my opinion, pennsylvania is if cheating goes on. Reporter what do you think of donald trump saying if he loses pennsylvania its because people here cheat . I think you saw today, we have a lot of enthusiasm and register a lot of new voters. Reporter but the Campaign Still has to persuade people they can trust her. Andrea mitchell, nbc news, philadelphia. The Trump Campaign is pushing back in a bombshell report that roger ailes, the former fox news chief is now advising donald trump himself. Were also learning details on trumps first classified intelligence briefing. Katy tur has more. Reporter donald trump is in wisconsin today, state he wants to turn red. But down in the polls there and across the country, trump is running out of time. Todays campaign fwlatly denying the candidate is turning to an old friend and republican stat gist roger ailes for help. Ousted by fox, ailes is currently facing a high profile lawsuit for sexual harassment, trump is facing a widening gender gap. Down 23 points among College Educated white women alone. He has one chance to turn his Campaign Around and convince the American People that he is worthy and ready to be president of the united states. Reporter tomorrow trump getting his First National security briefing in new york. A senior Government Official telling nbc news the briefings are less detailed tha president s Daily Briefing and wont touch covert operations, Nuclear Weapons or espionage, instead, hell get a broad overview. Trump notified the director of National Intelligence he would be accompanied by his foreign intelligenced a advisor general mike flynn. Still ahead, volleyball duo, the moment they decided to stop being rivals and chase their dreams together. Chase their dreams together. And moments in i accept im not 22 chase their dreams together. And moments in i accept im not the rower i used to be. I even accept i have a higher risk of stroke due to afib, a type of irregular heartbeat not caused by a heart valve problem. But what i wont accept is getting out there with less than my best. So if i can go for Something Better than warfarin, i will. 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Oh, no, i said that. Even better, sorry. Reporter april is also a california native. At home a ceramic moose is looking for more medals. This is nice, but this is a fabulous moose. There was never any question about where im going to hang the medal. Im like its going on the moose. Reporter the 38yearold didnt know it then, but in london, baby number three was already on the way. No crying, because this is so exciting. Reporter each day is fresh chaos. I cant say enough about how amazing it is to chase a huge dream and to be living a dream at home. Reporter on the court, the new partnership was tested, kerry injured her shoulder and was today they say theyre healthy and completely in sync. That was the hardest to get down. Reporter in rio, kerry and april could be the spoilers. Beach volleyball is a beloved sport in brazil and there are tough hometown favorites. For april and kerry, its the perfect stage. My day dream, my ideal, this is what i want. Reporter tonight they are facing the reigning World Champion team. The other team got knocked out in the semifinals. The crowd here is going to be fired up and its going to be a super tough match. Were back in a in a world that needs a hero, justice is spelled box. Say hello to a powerful tool that gives you options to fit your budget. . Oh, im tied to this chair dundundaaaa i dont know that an insurancethemed comic book is what were looking for. Did i mention he can save people nearly 600 . You havent even heard my catchphrase. Im all done with this guy. Box him up. Thats terrible. 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 serious disease. Re 50 or older, one dose of the prevnar 13 . 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John mclaughlin, a pioneer in political commentary on the Mclaughlin Group for 30 years passed away this morning, missing his first show since 1982. As our own chuck todd said today, John Mclaughlins legacy and influence can be seen on at least five cable channels daily, he changed political tv. That he did, upending the soft spoken tv commentary style with a show that was boisterous, free wheeling and entertaining, always signing off with his John Mclaughlin was 81 years old. Catherine rainier is ending her 36 year career on the force to become security for the nfl. On top of her four gold medals, simone biles still had one more dream here in rio to accomplish and it she met her crush, actor zac efron. She has a life sized cut out of him in her bedroom which she used to kiss. Now were going to have more of their surprise meeting tomorrow on today. Competition . . The ford freedom sales event is on our biggest event of the year just got better . . Announcing zero for seventytwo suvs. Plus, tagged vehicles now get a thousand smart bonus. Thats freedom from interest. And freedom to choose with ford. Americas best selling brand. . . Now get 0 financing for 72 months across the entire ford lineup, this car is traveling over 200 miles per hour. To win, every millisecond matters. Both on the track and thousands of miles away. With the help of at t, Red Bull Racing can share critical information about every inch of the car from virtually anywhere. Brakes are getting warm. Confirmed, daniel you need to cool your brakes. Understood, brake bias back 2 clicks. Nexium 24hr is now the 1 choice of doctors and pharmacists for their own frequent heartburn. For complete protection all day and night make nexium 24hr your 1 choice. I worked years to get my medicare dont know where id be without it so when i heard about conartists committing medicare fraud. It made me so mad i wanted to give them the old onetwo to get a free offer or gift two, always check your medicare statements for errors these crooks think were clueless, they dont have a clue its your medicare, protect it lebron james isnt only passionate about basketball. I sat down with him and talked about his other dreams. A life saving tip to a co worker thats created a special bond. Welcome back. We have stepped off the beach. Folks enjoying a lovely evening here in copacabana. Finally tonight, not everything about the olympics is about gold medals. For some gold rings will be the Cherished Memories of the rio and soaring mountains arent just a great backdrop for olympic competition, but also for romance. Heres peter alexander. Reporter turns out maybe there is something in the water in rio. This morning just moments after securing silver in the triple jump, american will clay took an even bigger leap, into the stands proposing to his girlfriend. Their friends and family erupted. What was more special. She was still glowing when we reached her this afternoon. Well, let me put my hands here. Im kind of still in shock. Reporter its not the first time at these games one set of rings has led to another. Immediately after a chinese diver stepped off the podium on sunday, dive chin ki dropped to one knee. A moment that needs explanation. But some say the show upstaged the divers medal win. Marriage is the ultimate team effort, making the Playing Field a perfect venue to kick it off. The rugby player accepting a proposal from her girlfriend. Tom boss worth proposing to his boyfriend on copacabana beach. This summer, rio is the city of romance. One of brazils celebrated songs peace, love, togetherness, if it works for some, it might work for others taking the plunge. Peter alexander, nbc news, rio. Thats going to do it for us. Itit is critical that they can have confidence that the system is fair. The reason teachers might go on strike in a couple weeks. Its something i have always dreamed about since i was a kid, way before 2004. In an exclusive interview goals that go far beyond winning another championship. Self less surgery. How a life saving procedure has bonded two men who have worked together for years. Good evening everybody. Some rain showers could impact your evening plans tonight and betsy is tracking when and where to h weve got a lot of cloud cover, scattered rain, some heavy at times in northern ohio. Now things are soso on the radar. Well go out east first. Theyre getting light to moderate rain showers that will continue toward the state line area. A few sprinkles into northern geaga county