And simone biles wins another gold. Are they the best athletes of alltime . Nightly news from rio begins right now. Announcer this is nbc nightly news with lester holt reporting from the olympic summer games in rio. From the olympics, full first the headlines. At least seven deaths have now been reported in louisiana. The number of rescues has reached 20,000 after a Staggering Amount of rain, as much as 2 1 2 feet inside 72 hours in some places. From overhead, baton rouge this evening, were looking at a watery scene that is in some ways reminiscent of the gabe. Reporter now a federal disaster area. What are we looking at right here . A shopping center, clearly a major retail area. Reporter today a break from the downpours, but not from the heart break. Many rivers receding, but still at levels. More than 7,000 people have been rescued in louisiana in the past few days, more than 12,000 or so have spent time in emergency shelters. Life after the historic flood wont be the same. In the hard hit town of watson, after 34 inches of torrential rain, the loss is staggering. Basically we lost everything other than our lives. Reporter mark mccully barely escaped with his wife and kids as the river rose six foot of water. Water is probably one of the worst Mother Nature beasts there is. Reporter his son with his own rescue story. Rescued by a helicopter just in time. Now the tropical moisture spreading west and north, putting 20 Million People in six states under flood watches, parts of missouri and texas have already flooded. Its acting just like a tropical system without the wind. Its grabbing all of gulf of mexico and continues to drop it as torrential rain along the gulf coast. Reporter in louisiana, communities cut off for days are assessing the unthinkable damage. Pastor michael luces church where homeowners sought sanctuary as homeowners were trapped on the second floor. Tonight he is grateful to be alive. Adding to the disaster, many homes are not covered by recede, major roads are shut down and a bit more rain is in the forecast through wednesday. Gabe, were watching another terrible disaster of a very different kind. Its unfolding in the opposite end of the country, in california where firefighters are battling eight large wildfires that are burning, theyre being temperatures and dry wind. Reporter out of control and burning fast. The socalled clayton fire ripping through main street of lower lake, a town founded in 1858. More than 1,000 firefighters battling flames on the ground. And in the air. Leaving wilted skeletons of homes and flames coming, it was right here. It just come so fast. Reporter as these 175 structures decimated across 4,000 acres. The devastation is huge, the devastation is extensive and there are hundreds of homes and buildings and structures that have been lost as a result of the fire yesterday. Reporter the local building warehouse up in flames now reduced to charred in had gone off. Reporter jody barnes has lefted in lower lake for more than 20 years. Grabbed the cats and grabbed the dog and basically ran for our life. Reporter all this devastation just a few miles from the historic valley fire last year. It was the third worst fire every in california. Its the last thing we wanted to have happen, really its just tragic. Reporter up here skies may be blue but the air smells of ash. The fire still very much on the move, just 5 contain and the cause still unknown. And the late day winds are picking up and this could send the fire in new directions and fast. Lester . Here in rio, a lot of news to cover, both on and off the field of play, a scare at the olympic park outside the basketball venue when a tv camera from the olympic fell 60 feet from a cable above that snapped. Seven people were injured and also two fires burning a few miles from the olympic field venue that kicked up smoke and ash and landed on the venue. And a pair of athletes who just might be the best ever in their respective sports. We get the latest from nbcs stephanie gosk. Seconds, but the usain bolt show just keeps going and going. From the very moment he walked out, to well after the race was over. This is not just about jamaica loving you, its about the world loving you. Why is that . Its just my charisma, you know what i mean . Reporter yes, its pretty clear what he means. Compare that reaction to this. U. S. Sprinter justin gatlin, banned from beijing in 2008 for doping finished second. I could see everybody so i was laughing. I knew i was catching him and one thing i always quote, just dont panic, take your time. Reporter bolts start was the second slowest, but then enough ahead to give a cheeky look. Usain bolt is unstoppable. At 65, he typically which means each of his strides is nearly 8 feet long, from here to here. Now im 58 and im not even close. And i probably cant get up. Now bolt has a record three gold in the 100 meter dash. He will race three more times in rio. While in gymnastics, dominance slipped for simone biles. If you think about it, im the only gymnast out here that has won as many times as i have. So i have to give myself props for that. Reporter instead of gold on the beam, she won bronze. Allison felix is going to race in the 100 meter. Shes hoping to repeat her gold medal win in london. A busy day on the campaign trail today, donald trump and Hillary Clinton both in Battle Ground immigration proposal, something he called extreme vetting while clinton had some high powered help in going after donald trump. We start with nbcs katy tur. Reporter tonight Donald Trumps message is clear. Hillary clinton launched isis on to the world stage. Reporter under democrats, isis is expanding, under him that will end. Trump is outlining new details for his controversial new muslim ban. I call i vetting. Reporter the vetting including what trump calls a cold war era ideological test. We must screen out any hostile attitudes towards our country. Reporter trump also calls for using warning signs for international intervention. This new system will be used for local Police Officers, federal investigators and immigration screeners. Hes saying a majority of americans set aside some civil liberties. Reporter notably missing trumps past insistence that obama founded isis. It gets repeated in the middle east and puts a target on u. S. Troops. If my son were still in iraq, and i say to all those who are there, the threat to their life has gone up a couple clicks. Message on isis turned to Anticorruption Task force uncovered a ledger allegedly documenting 7. 12 million in off the books Cash Payments from ukraines past from paul manafort. Manafort called the allegation silly and nonsensical. Reporter this is scranton, where Hillary Clinton is going after donald trump where hes strongest, with White Working Class voters. Trump is counting on them to give him his best and perhaps only shot at the white house. Joe biden is helping clinton make her case. If youre worried about your job, then theres only one person in this election who will possibly help you and that is Hillary Clinton. Were going to make the biggest investment ii. Reporter joe biden telling me Donald Trumps economic plan doesnt add up. He has no notion what hes talking about. And just look at his budget. Reporter what do you say to white, not College Educated men in pennsylvania, in scranton. Thats what im saying here, take a look at the facts, take a look at what hes talking about. Reporter clinton is practically camping out in pennsylvania. Convention, launched her bus tour, and though polls have her head among White Working Class voters, trump is up and gaining. So we went to a local coffee house and asked why trump . Have you decided who youre going to vote for . Im going to vote for trump because i think he can by jobs back because hes a successful businessman. Donald trump knows what it is to run a business, he knows how to make the economy grow. Reporter clinton with a big dose of joe biden. Tonight we have a rare look inside a secret operation saving lives in war torn syria. Its an underground hospital hidden away as the brutal conflict between Government Forces and rebels wages on above. And so many patients brought here are children. Richard engel brought us inside where some of the images may be disturbing to watch. Bombing of aleppo has targeted so many hospitals the few still working have been forced below ground. Nbc news was granted rare access to one of these unmarked hidden basement clinics, where 2yearold bayon was barely alive after an air strike on his home. Medical staff tirelessly tried to push and pump life into the boy. Then listen for a heart beat that wasnt there. But theres no take in the horror, children Keep Streaming in. After bombings in this city, rescue workers often save children first, so its children who fill nearly every bed. The images never leave you, they scar you. Reporter this doctor is a surgeon in chicago, but last month, he snuck into aleppo to volunteer. The doctors are exhausted, theyre the world, its that they want the world to know whats happening. Reporter the makeshift hospital rooms are crowded. It can take days for families to find their injured sons and daughters. 10yearold sawad lost her leg, she had been sleeping by a window when a bomb dropped. The doctor asked if any of her relatives were hurt. She says no, but shes wrong. She doesnt know that the attack that took her leg, also killed her 8yearold a boy nearby repeats, he wants to leave. But theres no leaving aleppo, its encircled, starving and under attack. The injured children forced under ground. Richard engel, nbc news. And that nightmare continues. Theres more ahead as we continue, violence in the streets, fears of another dangerous night in a major American City where protesters demand to killing an armed suspect. Also whats in their viagra single packs. So guys with ed can. Take viagra when they need it. Ask your doctor if your heart is healthy enough for sex. Do not take viagra if you take nitrates for chest pain or adempas . For pulmonary hypertension. Your Blood Pressure could drop to an unsafe level. To avoid longterm injury, seek immediate medical help for an erection lasting more than four hours. Stop taking viagra and call your doctor right away if you im phil mickelson, pro golfer. My Psoriatic Arthritis caused joint pain. 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Were back now with tensions erupting in milwaukee, a curfew has now been imposed for teens this week after 14 people were arrested, one person was shot and several officers were injured during protests last night. Driving it all, a Police Officer who shot and killed an alleged armed suspect. Both the officer and nbcs Kerry Sanders has more. Reporter two rounds of violence, gun fire and destruction in milwaukee and tonight with more fears of unrest, no let up in demand for the body camera footage. The video shows the man running away after a traffic stop, raising what appears to be a gun in his Police Officer still unnamed firing two fatal shots. We want them to release the tape so we can see it. Because i these theyre hiding something, taking too long. Reporter after swearing in 40 new Police Recruits today, milwaukees mayor said he too wants that both cam video released. The clip was recorded without audio lasts only 25 seconds. I did not see the video in which the video had a gun in his hand. Reporter but which wisconsin state Officials Say they cannot release the video because its key evidence in their case against the shooter. Police tweeted photos of gunshots fired at them, a police riot helmet hit by a bullet last night. Which leaves a heightened anxiety here tonight as riot police may again have to enter this neighborhood. Kerry sanders, nbc news, milwaukee. Up next, a new warning about the up next, a new warning about the health risks of [ crowd nois] whoa. [ gears stopping ] when your pain reliever stops working, your whole day stops. Try this. D advil can quit after 6. So live your whole day, not part. With 12 hour aleve. I thought my bladder leakage meant my social life was over. Wearing depend underwear has allowed me to fully engage in my life and im meeting people. Unlike the bargain brand, new depend fitflex underwear is now more flexible to move with you. 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Its liberating and sloan is back. With you. Reconnect with the life youve been missing. Get a free sample at depend. Com. The rain falling here in rioon of the wonders of this immense country and indeed the whole world. The amazon rain forest, as big as the continental u. S. And home to more species of animals than anywhere on earth. Tom brokaw heads here to take a look at what some call the lungs of the earth. Reporter it is a world unto itself, of life where nature square mile after square mile, onefifth of all the fresh water in the world. I first traveled to the amazon 25 years ago to see the work of scientists cataloging this treasure house of the natural world. So how many lifetimes would it take for you to know a lot more than you do now about what its going on here . Well, you know how it works, the more you know, the more you need to figur reporter this man and his wife are hid of national am zonian research. This is part of the National Treasure of the earth, right . The forest is very important for a lot of people. Reporter prized by scientists and fortune seekers alike. When youre in the rain forest, it has kind of a spiritual effect. But it also has a sinister danger because its become a ecologists, naturalists and people who want to develop this area. According to an International Human rights organizationization, 24 activists have been killed for their work in the amazon in the first four months of this year alone. The many indigenous tribes are under tremendous pressure here as well. There is a feeling that protecting the rain forest and natural ecosystems in the amazon is worksing against its really important that we make it clear that everybody benefits from a preserved ecosystem. Reporter a future without the amazon is simply unthinkable. We really havent come close to describing everything there is. This is the Michael Jordan of biodiversity. Or lebron james these days. Right. Reporter mario has been upriver for a long time. For him, no manmade wonder can compete with the natural tom brokaw, nbc news, in the amazon. And that will do it for us on this monday, a reminder, nbc prime time olympic coverage begins at were hear from the men who served 20 years for a murder did he cant commit. Allegation that have the band us is suspend he had. Still on the seek end of moisture that stretches gear down to the gulf of mexico. Well show what you that means for the rest of the forecast coming up. We are live in rio as pip lee ans olympians people are to go gold. Now, channel 3 good evening, everyone. They are free at last. Today, a judge in east chief lapped granted three men their freedom after they served 20 years for a crime they say they did not commit. Channel 3 is has the reaction. They were known as the East Cleveland 3. They were convicted of march. It did are murder