Headquarters in new york, this is nnbc nightly news, reporting tonight Kristen Welker. We begin tonight with tragedy in texas. A hot air balloon carrying at least 16 people caught fire and crashed in central texas. Its believed to be the largest loss of life in history due to a hot air balloon accident. Its all unfolding about 30 miles south of austin in an area popular for ballooning and sky diving. Tonight the governor is asking for prayers. Charles hadlock has our report. Reporter the charred remains of the hot air balloon are all thats left after an Early Morning ride through the sky turned tragic. The balloon was carrying at least 16 people. There are no survivors. The crash site is near high power lines. Margaret wylie lives nearby. It wasnt like an explosion. It just went up. Reporter wylie says she sees balloons in the area all the time, but never imagined Something Like this. The way it went up nobody stood a chance. Reporter it was owned the heart of texas air balloon rides. Victim specialists, weather experts, all who will be arriving tonight who begin a significant investigation into this tragedy. Reporter the last deadly hot air balloon crash in the u. S. Was in 2014 when three people were killed when their balloon caught fire. A local balloon pilot in austin tells nbc news he believes power lines may have also been a factor in todays crash. Investigators say they are treating the accident like a crime scene as they search for answers. Federal safety investigators recommended two years ago that balloon tour operators be subject to faa safety oversight, but the faa rejected those recommendations. Turning to politics now with both conventions in the rearview mirror, Hillary Clinton and tim kaine are hitting the road. Its day two of a threeday bus trip through the critical battleground states of pennsylvania and ohio. The democrats trying to sell their jobs plan to working class voters who could be key to winning the election. Andrea mitchell is traveling with the Clinton Campaign and has our report tonight. Reporter rolling through rural western pennsylvania 100 days from the election, Hillary Clinton and tim kaine going to the heart of a republican stronghold. Here in almost all White Cambria county, there is only one issue. Jobs. Were going to create jobs in pennsylvania and across america. Reporter in the rustbelt, donald trump is targeting working class voters angry and frustrated that the recovery has not caught up with them. We need help this in community. In this area, we need help. Reporter clinton has detailed plans on every aspect of the economy on her website and in her speeches. Well make Companies Pay for what are called inversions under the tax code. Reporter but everyone with those details, she is trailing donald trump in pennsylvania and ohio among white noncollege educated voters, struggling to compete with trumps much simpler message. Were going to bring back our jobs and people are going to have great jobs again. I actually have plans. Some people make fun of me for having plans. Voters need to look beneath the surface and see what it is the candidates would like to deliver and is there anything in their history that suggests they can make good on those promises. Reporter its the economy, stupid. Bill clinton not usually campaigning with her at her side for the last two days. But its also an early road test for her running mate tim kaine. Do you want a youre hired president or a youre fired president . Reporter bill clinton wore a shirt made in redding pennsylvania. Theres new fallout from one of the most talked about moments from the Democratic National convention. Today donald trump responded to the father of a fallen american soldier who sparked a public debate over religion and sacrifice. Reporter donald trump on defense tonight after parents of a fallen soldier proclaimed to a National Audience that trump has sacrificed nothing and no one. I think ive made a lot of sacrifices. I work very, very hard. Ive created thousands and thousands of jobs, tens of thousands of jobs. Those are sacrifices . Oh, sure. I think theyre sacrifices. I think when i can employ thousands and thousands of people, take care of their education reporter trump pointing as his wifes silence on stage. If you look at his wife, she had nothing to say. Maybe she wasnt allowed to have anything to say. Reporter not true. I was very nervous because i cannot see my sons picture and i cannot even come in the room where his pictures are. Thats why when i saw the picture on my back i couldnt take it, and i controlled myself at that time. So it is very hard. Reporter trump would rather focus on whats wrong with the country. American Home Ownership in the lowest its been in 51 years. Longterm unemployment the worst in 70 years. But the family is center stage. His rhetoric disqualifying they say, as they spoke directly to Republican Leadership in washington. To repudiate trump, this is model imperative for both leaders to say to him enough. Reporter in a statement not mentioning trump by name, Hillary Clinton says in part, this is a time to honor the sacrifice of captain khan and all the fallen. They represent the best of america and no surprise that Republican Leaders are being asked to respond as well as spokesperson speaker paul ryan. He rejects this idea and has talked himself about how Muslim Americans have made the ultimate sacrifice for this country. It is heating up. With 100 days to go until the election, chuck todd will be speaking to Paul Manafort tomorrow on meet the press. Now to Washington State where a house party full of young people turned deadly last night a seattle suburb. A gunman arrived and opened fire killing three people and injuring another. The mayor says her community is shaken to its core. Steve patterson is there and has our report tonight. Reporter police in full pursuit, acting on a tip the suspect in a terrifying triple killing was fleeing by car. Southbound i5 mile post 80 behind a suspect in a triple homicide. Reporter officers arrested the suspect alan ivanoff, reportedly 19 years old. All at a house party filled with teens and young adults. It was a gathering. 15 to 20 subjects. Reporter eyewitnesses at the party say the gunman shot two of the victims at a fire pit in back of the property and then moved to the roof where more people were gathered. When you hear shooters are on the run still, you instantly lock up your doors and everything. Reporter she says her granddaughter was there. My granddaughter called us about 20 minutes after midnight and said she was hiding, that thered been a shooting and two of her friends was shot and she was shot at. Reporter she said the suspect knew the people at the party and may have broken up last week with one of the victims. We grieve with the families of those lost in this horrible event. Theres no words that can measure the pain that theyre feeling. Reporter tonight a Community Mourning the young lives taken in a moment of senseless violence. Hes been charged with three counts of murder in this case. He faces arraignment on monday. Just tragic. In california now, a week old wildfire is growing even bigger tonight. It has destroyed more than 60 homes. The fire is only 15 contained and is threatening 2,000 homes. Several communities remain under emergency mandatory evacuation orders. Now to south florida with the first homegrown cases of the zika virus in the u. S. Are putting officials on high alert. Reporter as worries about zika grow in miami, so does demand for Mosquito Control services. About how many homes a day are you doing . About 40 to 50. This is up from last year . About double. Reporter homeowners increasingly concerned about the longterm effects of the virus. You never really think that it might come to your backyard, but now that its here were going to do everything we can to try to protect our family. Reporter after officials this week announced four cases of locally transmitted zika in an area north of downtown miami. Today Health Department officials distributed kits to pregnant and expectant mothers. Zika has been linked to cases of microcepha microcephaly. In miami, women and their doctors are taking precautions. My concerns were making sure im fully clothed, understanding the virus. Reporter a trendy Arts District is in the area of transmission. Businesses worry the news that zika is here will keep visitors away. If fewer people come, the worse it will be. Health and economic worries heightened as homegrown zika takes hold in miami. Now officials at this point are not advising that people stay away from this area, but instead take precautions. The risk they say of contracting zika is low. The consequences, however, potentially severe. Kristen, back to you. One of the leading advocates for people with autism has died. Susan wright a cofounder of autism speaks. She started the organization in 2005 with her husband bob wright. It was a year after their grandson was diagnosed with autism. A Public Service symbolized by the organizations blue cutout logo. Susan wright died of pancreatic cancer at her home in connecticut. The new steps some churches are taking to the new steps some churches are taking to protect is depression more than sadness . The new steps some churches are taking to protect its a tangle of multiple symptoms. Trintellix vortioxetine is a prescription medicine for depression. Trintellix may start to untangle or help improve the multiple symptoms of depression. For me, trintellix made a difference. Tell your healthcare professional right away if your depression worsens, or you have unusual changes in mood, behavior or thoughts of suicide. Antidepressants can increase these in children, teens, and young adults. Trintellix has not been studied in children. Do not take with maois. Tell your healthcare professional about your medications, including migraine, psychiatric and depression medications to avoid a potentially lifethreatening condition. Increased risk of bleeding or bruising may occur especially if taken with nsaid pain relievers, aspirin, or blood thinners. Manic episodes or vision problems may occur in some people. May cause low sodium levels. The most common side effects are nausea, constipation and vomiting. Trintellix did not have Significant Impact on weight. Ask your healthcare professional if trintellix could make a difference for you. 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He is part of a Church Security team at the rock church in colorado. The men watching over the service have badges and guns. It makes me feel so much safer in the times that we live now. We can really reporter they are part of a team created in response to Church Attacks like the recent execution of a Catholic Priest in france, the New Life Church shootings in colorado springs, or the Emanuel Church massacre in charleston last year. They regularly train in an active Shooter TrainingResponse Center run by a former navy seal, jimmy graham. The same training used by police and military. They came in shoulder to shoulder like a s. W. A. T. Team. That other guy has to be able to fire his gun. Reporter more businesses and churches are calling concerned about a rise in Mass Shootings. Now these threats are showing up and we need to be better at taking care of each other. Reporter some say teaching people how to shoot bshoot back could open up liability concerns. Sandy phillips daughter was killed in the aurora theater massacre. Are we going to have everyone carrying around an ar15 . Do you know how quickly that would descend into absolute chaos . If nothing ever happens, great. But what if it does . Are you ready . Reporter his congregation praying for peace while guarded by those trained for the worst. A sign of the times. Coming up, a powerful combination. How meditation and running used together with my moderate to severe crohns disease,. I was always searching for ways to manage my symptoms. I thought i had it covered. Then i realized managing was all i was doing. When i finally told my doctor, he said humira was for people like me who have tried other medications,. But still experience the symptoms of moderate to severe crohns disease. In clinical studies, the majority of patients on humira saw significant symptom relief. And many achieved remission. 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. If youre still just managing your symptoms, ask your gastroenterologist about humira. With humira, remission is possible. Now you cant spell nutriam i right . T nut, i mean whose to say its pronounced nutriton, anyway . My mixes contain delicious nuts, specially blended for your optimal nutrition. Thats right, i just changed a word in the english dictionary, forever. Planters. Nutrition starts with nut. The sunll come out for people with Heart Failure, tomorrow is not a given. But entresto is a medicine that helps make more tomorrows possible. Tomorrow, tomorrow. I love ya, tomorrow in the largest Heart Failure study ever. Entresto helped more people stay alive and out of the hospital than a leading Heart Failure medicine. Women who are pregnant must not take entresto. It can cause harm or death to an unborn baby. Dont take entresto with an ace inhibitor or aliskiren. If youve had angioedema while taking an ace or arb medicine, dont take entresto. The most serious side effects are angioedema, low blood pressure. Kidney problems, or high potassium in your blood. Tomorrow, tomorrow i love ya, tomorrow. Ask your heart doctor about entresto. And help make tomorrow possible. Youre only a day away an emotional scene in london today as the worlds longest yacht race came to an end. After 11 months and 14,000 mimes at sea, 12 teams of amateur sailers arrived. Two sailors died at sea. Theres news tonight about an illness affecting millions of americans of all ages from all walks of life. Were talking about depression. Theres a way to fight it without a doctor or medicine. Morgan radford has the details. Reporter new research is suggesting practicing meditation and then running could be a winning combination to fight depression. More powerful than doing either of those activities alone. Up until recently no one had really combined those two in one intervention. Reporter a psychologist studied a small group of men and women. After doing it twice a week for eight weeks, those with depression had a 40 decrease in symptoms and felt happier and more social. This is a map of the whole brain. Reporter she says it works because of those activities help boost the brains hip hippocampus. Shore says it can also be preventive, which is why she leads a study for College Students who are at higher risk for developing mental illness. Really easy to get wrapped up in your gpa and staying on top of your social life. Reporter after six weeks, a sophomore says shes already noticed a change. I wake up feeling less groggy. Reporter shore says the best part you dont need fancy equipment and it did you want require a lot of money. Once you learn how to do it, you can do it anywhere. Reporter decreasing depression one step at a time. Morgan radford, nbc news, new brunswick, new jersey. After months without a winner, tonights Powerball Jackpot has soared to 478 million. Thats the eight largest lottery prize in u. S. History. The odds of buying a Winning Ticket are 1 in 252 million. If nobody wins tonight, the jackpot will roll over to 570 million. The magical world of h is depression more than sadness . Its a tangle of multiple symptoms. Trintellix vortioxetine is a prescription medicine for depression. Trintellix may start to untangle or help improve the multiple symptoms of depression. For me, trintellix made a difference. Tell your healthcare professional right away if your depression worsens, or you have unusual changes in mood, behavior or thoughts of suicide. Antidepressants can increase these in children, teens, and young adults. Trintellix has not been studied in children. Do not take with maois. Tell your healthcare professional about your medications, including migraine, psychiatric and depression medications to avoid a potentially