Nightly news begins right now. Announcer this is nbc nightly news with lester holt reporting tonight from the olympic summer games in rio. Good evening from copacabana beach as we begin the last weekend of the 2016 summer games. The fact that we are here in brazil reporting our top story tonight carries a certain degree of irony, because for all the worries abou traveled to florida raising new red flags tonight after five locally transmitted cases were identified. A new travel warning women against travel to two areas in miami. Word of new cases now threatens to deliver a blow to the areas vibrant tourist industry. Nbcs Kerry Sanders beach early this morning in a cloud of insecticide, but with so many highrises, planes cant swoop down to spray. At risk, public health, and a 24 billion tourism industry. Tourism is a driving force of our economy and this industry has the full support of our state in the fight against the zika virus. Reporter today florida officials announced local mosquitos infected five people with zika, residents of miami beach, two were men, three were women. Im a young father who may want to have another child, this is a conversation we have in our household, these are valid concerns and the scariest thing is what we dont know. Reporter the new travel warnings for parts of famed south beach, a 1. 5mile zone, this new zika zone, only six miles from wynwood where the virus already showed canceling trips to miami beach. This week we had three phone calls and three cancellations, one of which was pregnant for the fear of zika. Reporter tonight the cdc says its possible homegrown zika may be in other neighborhoods in miamidade just not yet detected. We found the messaging from the Governors Office to be very dissatisfying, frankly misleading. Health doctors telling nbc news they are frustrated floridas governor wont let them talk. Have you muzzled them . Have you put the economy of this state over the health of its citizens . We want to make sure every citizen in the state knows whats going on. Reporter tonight the cdc is warning any women who have been in the new zika zone to wait at least eight weeks before getting pregnant. But the mayor here in south beach says that he would hate to be a mosquito on Miami Florida tonight. Kerry, thanks. Tonight here in rio, much of the talk of these Olympic Games continues to come off the playing field. American swimmer ryan lochte who made waves out of the pool after police say he lied about being robbed issued an apology today. Its what police and so many here in brazil had wanted after lochte said he and three other swimmers were robbed after a night on the town. Nbcs Miguel Almaguer has late details for us. Reporter today ryan lochte breaking days of silence, saying in part on apologize for my behavior last weekend, for not being more careful and candid in how i described the events of that early morning. His apology coming after Police Release security footage, proving, they say, lochte and three other american swimmers were not victims of a robbery, but instead are vandals, damaging a gas station after a pence and jack arrived back in the u. S. This morning, brazilian authorities allowing them to go home because they never lied to officials. According to transcripts of their statements obtained by nbc news, conger said they had been drinking vodka and champagne before they stopped at a gas station where ryan pulled off a sign from the wall. Conger admitted he and lochte urinated on the plants. Ben said the story ryan told the American Press was different avoided all these problems. What they need to do is going over everything and tell the truth. I got drunk, i broke a few things, i got involved in a confusion, big deal. Reporter as for jimmy feigen, the fourth swimmer who police say fabricated parts of his story, he revised his original statement thursday, after agreeing to pay nearly 11,000 in restitution to a lawyer says his case is resolved. Lochte could also face a fine, but will likely pay a much higher cost with his endorsement deal. Ryan lochtes actions this week are going to sink his endorsement potential. I believe hes going to lose between 5 million and 10 million because of his antics. Reporter years of hard work in the pool, tarnished by a late night out that could still sink a career. Tonight we have learned jimmy feigen cleared to fly back to the united states. Meantime a review committee has been set up to review the actions of the swimmers did. They could still be kicked off the team or placed on probation. Thats to be decided in the days to come. Some pretty dramatic victories on the track here in rio. The fastest man in the world usain bolt blew away the competition to win gold in the 200 man in history to win back to back decathlons after his victory four years ago in london renewing his title as the worlds greatest athlete. Turning now to the infernos raging in california where nearly 10,000 firefighters are fighting six wild fires, red flag warnings were extended through the day in several areas, including los angeles and san diego counties. Now evacuees are beginning to return to find nothing of the. Our joe friar has more from california. Reporter at first its the fire that was playing offense racing across dry foothills forcing 80,000 people to quickly abandon their homes. Gary williamson returned to his property to discover his car burned but his rv did not. I cant thank the Fire Department enough. This is just overwhelming to me that i was lucky. Reporter today its the firefighters with traces of smoke oef charred land where 96 homes have been destroyed. One of those homes belonged to ronnie moore and his family. The main thing is my familys safe. Everything else can be replaced. Reporter they have been living in a riteaid parking lot thats become a temporary rv park for evacuees. For now the kaine family is actually living out of a nissan with their three pets. Its been trying, but were we northern california, another fire this week torched 190 homes. One belonged to Matthew Porter who was at the olympics in rio where he managed equipment for team usa fencing. His athletes won medals, but his family lost their home of just two months. As long as we have got each other, we can get through anything. Reporter back here in Southern California at the blue cut fire, are returning home to see if their properties were spared or if they were destroyed like this one behind me here. Lester . All right, joe friar, thank you. To president ial politics now and another bombshell from the Trump Campaign today. The resignation of the embattled Campaign ChairmanPaul Manafort made a wave of bad headlines and growing questions about manaforts connections to russia. He has quit the campaign, all as trump made a president ial like visit to the flood zone in louisiana. Nbcs katy tur has the inside story of how it all went down. Reporter its been a head spinning week for the donald Trump Campaign. On wednesday, chairman Paul Manafort had a seat at the table, tonight hes out of a job, resigning two days after trump sidelined him with a new management team. The trumpmanafort relationship was adversarial and was sometimes punctuated by screaming matches. Trump wanted a hands on top aide, manafort i want to get something done, now im dubious because donald trump doesnt seem to listen to anybody. Reporter Campaign Sources say manafort was ousted because of bad polls, leaks and his questionable connection with russia. And this week Court Documents were released tying manafort to the russian mafia. He didnt want to be a distraction a source to manaforts thinki but today he was. In Hillary Clintons america, the system stays rigged. Reporter taking attention away from trumps general election tv ad and his lastminute visit to flood devastated baton rouge. Im just here to help, thank you. Reporter trump trying to show compassion a day after he made a rare admission. You dont choose the right words or you say the wrong thing. I have done that. Reporter in 14 months trump has insulted hundreds of people, places and things. He was talking about anyone who feels offended by anything he said and thats all him. Reporter in michigan tonight, he read from a teleprompter again hoping to make it a full week without offending anyone. Just now in michigan, trump told an almost entirely white crowd that africanamericans living in communities under democratic control should vote for him because theyre living in poverty. And jobless. What the hell do you have to lose, he said . Lester. Katy tur, thank you. After trump took some jabs at president obama today for not yet visiting flood ravaged baton rouge, the white house announced that the president will arrive there tuesday to view the devastation for himself. This as residents begin to fathom the enormous cost of this disaster. Nbcs Gabe Gutierrez with more on that. Reporter one week after the skies opened sorento, louisiana. New figures out today estimate the flood damage is at least 20 billion, more than 95,000 people have applied for federal aid. This is a family bible, its soaking wet. It is overwhelming. What am i going to do now . Its definitely not over and it aint over for a long time. Reporter we were there saturday as volunteers scrambled to rescue her. My whole life. Reporter since then, shes stayed with relatives, sleeping on an air mattress, four feet of water tore her home apart. I have lost it several times. Its hard. It is. Reporter she is just one of the thousands without flood insurance, not asking for much, just not to be forgotten. Gabe gutierrez, nbc news, baker, louisiana. Tense moments met within visual range by a pair of u. S. Fighter jets according to a senior u. S. Defense official. The syrians did not respond when the u. S. Attempted to contact them and then the syrian planes left. It happened in the same area where the pentagon says syrian planes dropped bombs yesterday, the closest u. S. Forces on the ground have come to being hit by the syrian government. Still ahead tonight, triple threat, the olympic triathlete who left her desk job to chase her dream of becoming the First American to bring home gold in her and the joy and the tears. Emotional moments that touched hearts around the world at the rio back now with some olympic inspiration for anybody whos ever thought about leaving behind the daily grind to pursue a dream. Kevin tibbles has one of rios great untold stories. Reporter when jorgensen is as good at crunching the numbers as she is at competition. The triathlete was working as a fulltime tax accountant just five years ago. You have to read the tax law and figure out different ways to hopefully save some money and its like a little puzzle for me. Reporter not bad for someone whos only been riding for five years. Solving the triathlon with its grueling endurances of cycling, swimming and running 30yearold ran 1,400 miles, raced through 22 pairs of sneakers and more than 30 bicycle tires. Gwen who now lives above a bike shop, didnt exactly fall in love with cycling as a kid. We had to bribe her with ice cream to ride her bike. She would rather run or go swimming. Keep going, keep going. Ill give you ice cream. Okay, ill ride the bike. Reporter but she did feel at home in the pool and swimming remains her passion today. Theres something about diving in that water and being on your own and challenging yourself that was really exciting for me. Reporter gwen won 12 straight World Triathlon series races, part of her twoyear undefeated streak which ended in april after a second place finish. Still her winning record makes her the first olympic gold in triathlons. But even in an individual sport, gwen says winning requires team work. Gwens husband has put his own cycling career on hold to support gwen. The amount of dedication and work that she puts into her job is second to none. Reporter he whips up meals brimming with calories because so many are burned with intense workouts. And when you cross the finish line, and youre in first. When you cross the finish line, even if youre not in first, if you know youve done everything you can to execute, its an amazing feeling. Reporter a wise calculation by someone whos balanced likes books. Es books. Ies fes books. s books. When we come back, sitting in with some of the musicians who provide the background to rios sultry summer nights. Welcome back. The beach where cafes like this play music into the night. And music is a big part of the brazilian culture. One of its biggest exports is its take on jazz. The music scene here is one no music lover can afford to miss. Brazil moves to its own beat. But no sub genre of brazilian jazz is more recognizable than the light and breezy bossa nova sound. Born here in the 50s and 60s near the sparkling wind blown sands of ipanema. Where on a friday night crowds pack to hear it performed. As musician and music professor explains, brazilian music is influenced by american jazz. Brazilian jazz and american jazz, theyre mostly cousins, they come from music that of African Heritage and was just a warmup in the new continent of americas, the american jazz north, the brazilian jazz south. The second is longer. Whereas traditional american jazz is heavy on swing, bossa nova puts the emphasis on another beat. That forms the basis of the bossa nova, everything revolves around that, the rhythm. It also relies heavily than piano, the result a rhythm and warmth that defies you to not sway your head. What is your inspiration, when you play jazz, is it the beach . Is it the mountains . What is your inspiration . Basically everything. Especially in rio, were between the depending you look one side you see the ocean, the other side, you see the mountains, thats where rio is. My toe is still tapping. Were going to take a break, when we come back, the most surprising, dramatic and emotional moments but finally tonight it has been an unforgettable two weeks here in rio. These Olympic Games have made spirits rise and tears fall. And our Peter Alexander has some of the most extraordinary moments. Reporter every four years these summer games come with the promise of greatness. Yes welcome to the club. Reporter as memorable as any medal, those dramatic moments. Murphy, stretching to the wall for olympic gold. Reporter globe. Each embrace you feel from home. Stanley and goodfellow have won bronze. Reporter these emotionally charged performances punctuated by spontaneous celebrations, from kenya. To kiribati. Some things need no translation. Countrys first ever medal. Its over, the first gold for brazil, its gold for silva. Reporter hometown favorite rafaela silva, rising from poverty to the podium, a chinese gymnast falling to her knees. Joy and relief. Still for all those dreams fulfilled that right there is an olympic gold medal winning moment. Reporter others are quickly dashed. Here in ri rushmore of modern sport. Heres bolt, he makes it look easy. Ledecky is a gold medallist. Reporter cementing their legacies. Superman is right now at 6 00. Michael phelps spotted in scottsdale. Toni friend and enemy, ryan lochte. Highimpact sports and hard hits. Three signs you may have a concussion. Temps in the low one hundreds but will monsoon storms return for the weekend . And you guess the two arizona towns on the most hilarious list . Tracking breaking news involving Sheriff Joe Arpaios contempt case. A federal judge asking contempt charges against Sheriff Joe Arpaio and his chief, jerry sheridan. The best live coverage tonight with our investigator, joe dana, and brahm reznik. Lets start with brahm reznik. Details on what is in the order . Remake the news is an earthquake. After 24 controversial years in office, Sheriff Joe Arpaio might be held personally accountable for wrongdoing. A live look right fr team 12 there we will bring you any news we get at any time. Federal judge murray snow telegraphed he would ask a federal prosecutor to charge arpaio for intentionally ignoring judges orders to stop racially profiling latino drivers. Snow follow through left open left open the possibility for perjury charges