Nightly news. Reporting tonight from washington, peter alexander. Good evening. Its already been an epic summer of fierce wildfires and punishing heat. The temperatures again soaring into the triple digits out west. At least 17 fires are burning across droughtstricken california, well ahead of last years pace. And dangerous months there is still to come. The situation in california is so dire that the u. S. Forest service pulled firefighters from all 50 states and puerto rico to help. A move veteran fire Officials Say they have never seen before. We begin with Gadi Schwartz on the front lines. It means even more wildfires. It means two separate fires near los angeles overnight. One threatening 500 homes. The other torching cabins and scatters wildlife. Its brutal. When you get the temperature and the wildlife involved. It makes for very challenging physically. More triple digit temperatures as 13,000 firefighters now battle 17 wildfires. These crews are working in extreme heat. Its 103 degrees. They are carrying about 60 pounds of gear. And its only expected to get hotter. Around the states, temperatures are cooler but not by much. How hot is it . 100. The sun stifling everyone forced to work outdoors. Its hot. Were trying to take breaks when we can. And as School Starts up again, this marching bond practicing how to stay cool. In arizona, a High School Football team packed up and moved into a gym because of the heat. The is definitely at a disadvantage. Still, you have to go with a Healthy Group of kids. Thats number one. Blistering temperatures baking not only california but the southern united states. The peak is this weekend. Saturday and sunday, the main thing is keep hydrated, drink plenty of water. It sends thousands of family straight to the beach. Yeah. Its been suddenly summer has started for us in southern california. While crowds look for relief in record temperatures and historic droughts, it will be a long summer for firefighters gearing up not only here in california but across the west. Battling what already seems to be a neverending fire season. Now, the fire burning here in Angeles National forrest is still at zero percent containment. We are just getting breaking reports out of Washington State where four massive wildfires are forcing massive evacuations. Were told 1,500 homes may be threatened and 50 to 100 of those already may have been destroyed. Peter. Gadi schwartz, thank you. Tens of thousands of travelers faced long delays or cancellations by major problems at an air Traffic Control system in virginia. It started on the east coast and spread well beyond. Kristen dahlgren is at Laguardia Airport tonight. Kristen, good evening. Good evening to you, peter. The faa says the system is back in service. Things slowly getting back to normal. I just checked the board inside laguardia. Only three departure delays. Still a dozen on arrival. Tonight up and down the east coast there are many passengers still stranded. At d. C. Reagan national this afternoon, the only thing going up was frustration. It shouldnt be like this. Planes werent going anywhere. According to the faa, the glitch was in a tracking Computer System based in leesburg, virginia. Supposed to help route High Altitude traffic near the nations capital. So this is what the airspace looked like for several hours. Planes not allowed to fly in and out of the usually busy region. Not a good day to fly. Stay home if you can. New york, d. C. And baltimore were especially hard hit. Threehour delays. But the misery quickly spread to miami, chicago, and beyond. More than 2,000 delays and hundreds of cancellations. The haskey family is traveling from new york to seattle. A lot of other things i can do on a saturday than sitting in laguardia all day. Social media posted about flightpocolypse. Blake jones shared his thoughts on claustrophobia and screaming kids. Hopefully this is resolved soon. Fingers crossed. The faa was able to reboot the system and begin flights. I will not be able to make it to my family reunion. So i am deeply, deeply disappointed. Now, the faa says it doesnt believe that the problem was caused by any accident or hacking. But the investigation into exactly what did cause all of this, peter, is still ongoing. Kristen, thanks very much. Its a rite of passage for anybody who wants to be president. The iowa state fair. And today several leading 2015 contenders tried to score big points there. But once again, donald trump may have stole the show. This time with his own ride. We have more tonight from nbcs katy tur. Donald trump trumping the iowa state fair. Landing with a flourish in a helicopter leaving no doubt as to who it belonged to. Leading the media on a slowspeed pursuit on a golf cart. And mugging for selfies. All the while sporting a bright red make America Great again hat. And ever the salesmtweeting this week you can buy your own online. It was one of the beatles. We thought, weve got to see this circus. The billionaire outlined his immigration plan for meet the press. You will rescind that one too . We have to make a whole new set of standards. And when people come in youre going to deport families, children . No. Well keep the families together. We have to keep the families together. Basking in the glow of poll numbers, he is being treated more like a rock star than a politician. In iowa during the day and New Hampshire last night. While Chris Christie and Carly Fiorina has done 60 stops, trump has done 16. Republicans there are used to. Despite outward appearances, signs that he is building a political machine, at least in iowa. Ten Campaign Staffers and already some caucus leaders. Not to mention a royal blue bus. Again, no question whose it is. Monday trump takes the show to court. Summoned for jury duty in new york. Are you looking forward to it . Yeah. Im looking forward to it. I think its fine. Taking a break from the trail and serving the system, which he argues only he can fix. Katy tur, hampton, New Hampshire. You can see more of chuck todds interview with donald trump right here tomorrow morning on meet the press. Hillary clinton was trying to get her message across in iowa as well today as she feels the heat from Bernie Sanders and from lingering questions about her private email accounts. Nbcs Kelly Odonnell is in iowa tonight. The flavor of the fair always delivers a wallop. From sugar rush to dried delights. Im eating my vegetables. But today there was a different kind of sensory overload. All about the politics. Bernie sanders, with his speech, defined his upstart success with voters. While Hillary Clinton did not address the crowd but made her rounds slowly. Locked in a crawling swarm of humanity. Cameras and iowa vote issers. How are you . Some friendly. Some not. Are you worried about going to prison . Clinton has other business to do here. Im going to let whatever this inquiry is go forward. On the examination of her private email server and whether classified material was improperly handled, clinton insisted she did nothing wrong. But also acknowledged today that information not marked as secret may have been on her server. I am repeating the facts. The facts are i did not send neuer did i receive material marked classified. Some voters here are skeptical. What do you need to see from Hillary Clinton . Just mainly concerned about those emails. Is everything is on the up and up, i would probably be likely to vote for her. Thank you, thank you. I think she knew better is and she shouldnt have done it. Clinton brushed off a flyover by trumps glitzy helicopter. Sanders says his momentum is real. If your campaign is summertime, or can you transition to being a real threat . They will have the money. But i think we have the people. And i think people will defeat big money. Hillary clinton also told us she believes that republicans in congress and in the gop race have made questions about her private email server a partisan iraq, and she wont get involved in that. Today she would not take a couple of questions about what she thinks about the possibility of joe biden getting in the democratic race. Peter . Kelly odonnell on the ground in iowa with the funnel cakes and the candidates tonight. Kelly, thanks very much. A memorial in chattanooga, tennessee for the five serviceman killed last month by a gunman who attacked a military recruiting office there. The shooter was shot and killed by police and has raised new concerns about security at recruiting centers and other military sites. In china, the toll from this weeks devastating explosions in the port city of tianjin became much higher today. The blast killed more than 100 people, among them 21 firefighters. Hundreds more were injured as those toxic explosions rained through the area. More small explosions saturday. Several cars bursting into flames. As a sign of fear and confusion in the area, residents told us they had been ordered to leave. The government told us to move. Its not safe here, said this man. Later, another city official denied this had been ordered. Staterun media reports say highly toxic sodium cyanide has been found near the site. Three days after the blast, fishes say theyre still unsure precisely what other chemicals were stored there. The massive explosions Late Wednesday were captured by cell phone cameras. This the terrifying spectacle from the roof of a nearby apartment building. Decimating a vast area around tianjins ports. Incredibly, they found another survivor today. He was pulled from inside a shipping container, just 160 feet from the blast epicenter. There are reports that the blasts might have been triggered with firefighters attending an area fire used water on volatile chemicals. 21 firefighters are among the more than 100 people confirmed dead. Hundreds injured. An unknown number still missing. Frustration boiled over saturday. Families of missing firefighters disrupted a press conference, demanding information on their loved ones. Its been three days and three nights, but still no information on my son, she said. She said her son had been one of the first to reach the blast site. With the credibility of the authorities increasingly under question, the government has ordered a nationwide check on hazardous sites. But still no answers as to why a warehouse full of dangerous chemicals was allowed to close to residential areas, apparently breaking chinas own laws. Peter. Ian williams, thank you very much. When nightly news continues on this saturday, putting a price on years lost for those my constipation and belly pain feel like a raging storm. Ive tried laxatives, but my symptoms keep returning. My constipation feels like a heavy weight that keeps coming back. Vo linzess can help. Oncedaily linzess treats adults with ibs with constipation or chronic constipation. Linzess is thought to help calm painsensing nerves and accelerate bowel movements. Linzess helps you proactively manage your symptoms. Do not give linzess to children under 6, and it should not be given to children 6 to 17. It may harm them. Dont take linzess if you have a bowel blockage. Get immediate help if you develop unusual or severe stomach pain, especially with bloody or black stools. The most common side effect is diarrhea, sometimes severe. If its severe, stop taking linzess and call your doctor right away. Other side effects include, gas, stomacharea pain and swelling. 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Advil toenail fungus . Seriously . Smash it with Jublia Jublia is a prescription medicine proven to treat toenail fungus. Use jublia as instructed by your doctor. Look at the footwork most common side effects include ingrown toenail, application site redness, itching, swelling, burning or stinging, blisters, and pain. Smash it make the call and ask your doctor if jublia is right for you. New larger size now available. They paid a huge price for crimes they did not commit. So far this year, 75 wrongly convicted inmates have been released from prison. A record pace as part of a growing trend across this country. Can any amount of money make up for years behind bars . For almost 20 years, he was inmate number 501130. He was sentenced to life in prison for the murder of his girlfriend Michelle Dyson in his baltimore home. I loved michelle. He insisted he came home one night and witnessed michelle dying from gunshot wounds to the head. When they charged you with murder, what do you think . I thought it was a mistake. Did you fire a gun . No, sir. I didnt fire no gun. Anybody that asked, you told them you were innocent. From the beginning. It turns out he was innocent. Instead of relying on a state program to compensate him, he is suing the Baltimore Police department, alleging a pattern of wrongful convictions. He claims they withheld an eyewitness statement that would have cleared him. And another man confessed, i was the one who killed his girlfriend. A jury award would likely pay burgess much more and hold police accountable. You can imagine the damage is enormous. Its essentially walked out of a time machine and fast forwarded two decades. And he has to piece together a life for himself. His exoneration was a record 125 nationwide last year. 30 states and washington, d. C. Guarantee compensation and the payouts vary widely. For instance, texas pays 80,000 for every year behind bars. But wisconsin pays 5,000 a year with a cap of 25,000. Rebecca brown say some states dont have the budgets to pay exxonees. These people have lost everything. Tomorrow he rehabs row houses. More money would bring back peace of mind but not the years lost with his daughter. No amount i can pay for the 20 years i missed out on my daughters life. Everything that she went through, the ups and downs of growing up without a father. Not commenting on the lawsuit, Baltimore Police department have moved to dismiss his case. Those proven innocent by dna alone have spent on average more than 13 years behind bars. Back in a moment on a bars. Back in a moment on a milestone. And tkind of like you huffing sometimes, grandpa. Well, when you have copd, it can be hard to breathe. It can be hard to get air out, which can make it hard to get air in. So i talked to my doctor. She said. Doctor symbicort could help you breathe better, starting within 5 minutes. Symbicort doesnt replace a rescue inhaler for sudden symptoms. 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Looks like we have some sort of sea monster in the water hazard here. I believe thats a kraken, bruce. It looks like hes going to go with a nine iron. That may not be enough club. Well hes definitely going to lose a stroke on this hole. If youre a golf commentator, you whisper. Its what you do. If you want to save fifteen percent or more on car insurance, you switch to geico. Its what you do. This golf course is electric. 50 years ago tonight, this was the scene as the beatles took the stage. They had been introduced 18 months earlier and played to 55,000 fans on that humid august night. At the time it was the largest crowd in music history. Were told at times it was almost impossible to hear the music over all the screaming fans. In another kind of classic has withstood the test of time. The sweet delights served at dairy queen. Some of the famed treats are no longer on the menu at your local dq. You can still find plenty of the old favorites at one spot. We went with harry smith to find out. We hold this truth to be self evident, man, do we love ice cream. A drippy cone on a summers day, man, that is the pursuit of happiness. In moorhead, minnesota, they have made a declaration of independence. They still serve the stuff the corporation put an end to. Like the dearly departed raspberry soda or oh, so awesome banana supreme. They bought the business 20 years ago from the people who started up here in 1949. Their old contract allows them to flout authority. Do you get any blow back from Corporate Headquarters . We havent yet, no. Troy says if they did come by, they might learn a thing or two. From march to october, theres almost always a line. The portions tend to be a little larger and the prices cheaper than the corporate stores. Regulars say the ice cream is better too. This is good stuff. And august may be the best because ice cream with peaches peeled by hand when the good ones come in from california. When you taste that, what do you taste . Here they double down on minnesota nights. And the customers come back again and again. People can be the grouchiest people in the world. But when they come up here and they walk away and theyve got that cone and lick that curl off the top, you did your job. Heres to the rebel dq that is gleefully out of compliance. Harry smith, nbc news, moorhead, minnesota. Bet youre ready for dessert . Bet youre ready for dessert . Up next, lester holt its a highly thercontagious disease. Here. It can be especially serious even fatal to infants. Unfortunately, many people who spread it may not know they have it. Its called whooping cough. And the cdc recommends everyone, including those around babies, make sure their whooping cough vaccination is up to date. Understand the danger your new grandchild faces. Talk to your doctor or pharmacist about you and your family getting a whooping cough vaccination today. Why pause a spontaneous moment to take a pill . Or stop to find a bathroom . Cialis for daily use, is approved to treat both erectile dysfunction and the urinary symptoms of bph, like needing to go frequently, day or night. Tell your doctor about all your medical conditions and medicines, and ask if your heart is healthy enough for sex. Do not take cialis if you take nitrates for chest pain, as it may cause an unsafe drop in Blood Pressure. Do not drink alcohol in excess. Side effects may include headache, upset stomach, delayed backache or muscle ache. To avoid longterm injury, get medical help right away for an erection lasting more than four hours. If you have any sudden decrease or loss in hearing or vision, or any symptoms of an allergic reaction, stop taking cialis and get medical help right away. Ask your doctor about cialis for daily use and a free 30tablet trial. The possibility of a flare swas almost always on my mind. Thinking about what to avoid, where to go. And how to deal with my uc. To me, that was normal. Until i talked to my doctor. She told me that humira helps people like me get uc under control and keep it under control when certain medications havent worked well enough. Humira can lower your ability to fight infections, including tuberculosis. Serious, sometimes fatal infections and cancers, including lymphoma, have happened; as have blood, liver, and nervous system problems, serious allergic reactions, and new or worsening heart failure. Before treatment, get tested for tb. Tell your doctor if youve been to areas where certain fungal infections are common, and if youve had tb, hepatitis b, are prone to infections, or have flulike symptoms or sores. Dont start humira if you have an infection. Raise your expectations. Ask your gastroenterologist about humira. With humira, control is possible. Finally tonight, one day after the American Flag was raised outside the u. S. Embassy in cuba for the first time in 54 years, were reminded of the man who ruled cuba most of that time, fidel castro. Some of the most memorable images came from an americanborn photographer. Lester holt has his story. Castro without a beard. Roberto salass collection of work has been nothing short of revolutionary. I started photography i dont know when. You might say a little bit after the day i was born. Born in new york, salas started working with his dad, a photographer with cuban roots. One day in 1955, im 15 years old at that time, he receives a request to do a picture story on this small group of political activists, the guy in charge of that group was castro. That first meeting with fidel castro launched salas on an historic path. This is castro in new york in 1959. Over the next 50 years, salass point of view would create epic images like this one. This image for me is the one i like the best. And i like it because it was taken by matchlight. Salas and a small group of photographers were given Privileged Access to any fell castro and his inner circle, chronicling the cuban revolution. Playing baseball. He captured him in wear. That was taken 2 30 in the morning. And more intimate settings. Dell says this was a paparazzi shot. He was a magnet for cameras, photographers, and everything. One of salass most Iconic Images was in 1961 on the on day the u. S. Severed ties with cuba and closed the embassy in havana. I said lets take a picture of you with the newspaper. The last time salas photographed castro was in 2005. For half a century, one man, a camera, and an eye for framing history. Lefter holt, nbc news, havana. Thats nbc nightly news for this saturday. Im peter alexander. For all of us at nbc news, thank you for watching. Good n for the brewers, the fireworks continued against the phillies this time inside miller park. The fireworks came off the milwaukee bats early. They exploded off the legs of aggressive base runners and sparkled on defense putting a halt to the phillies for the fifth straight time. Fans are rolling in for tonights ball game between th