Showing major damage, homes destroyed, a neighborhood leveled. 50 million at risk from texas to michigan, and the threat lasting into the night. Also tonight, the deadly turbulence on a Singapore Airlines flight out of london. Oxygen masks hanging down, debris in the aisles, blood on the seats. At least one dead, 30 injured. What caused it. Donald trumps defense resting its case on the Hush Money Trial without calling him to the stand. And the former president under fire after a video appearing to reference nazi germany was posted to his social media account. President biden accusing mr. Trump of using, quote, hitlers language. The battle over graceland. Elvis granddaughter accusing creditors of trying to steal the property away through fraud. The new turn in the investigation into the death of friends star matthew perry. Scarlett johansson taking on openai. What she is accusing the tech giant of doing after she turned them down. And the portal connecting two cities across the world reopening as long as everyone behaves. Announcer this is Nbc Nightly News with lester holt. Good evening and welcome. Breaking as we come on the air tonight, the radar maps lighting up with Tornado Warnings from yet another Severe Weather outbreak. A line of storms making their way across iowa this afternoon, where at least 12 tornadoes have been reported today and already one death. Early major Damage Reports coming in from greenfield, iowa, where as you can see homes have been demolished. Iowa, along with parts of minnesota and Western Illinois facing what the Weather Service is calling a particularly dangerous situation. Flood watches in effect for some of those same areas tonight. Maggie vespa and her team are in the storm zone. Maggie, there is destruction across iowa tonight . Yeah, lester, the strength of these storms was once again striking. And weve just learned, as you said, one person here in iowa was killed. Meanwhile, our team here in des moines took shelter in our hotels basement for the better part of the last hour as this latest round of violent tornadoes tore through. That thing is growing. Reporter tonight, the onslaught continues with more tornadoes barreling across america. Late today, at least 12 twisters reported and counting, all in iowa. Everybody take cover. Tornado warnings. Everybody take cover. Unfortunately, it may have just hit a farm as well down here. And again, this just highlights the fact that you need to take these warnings very seriously. Reporter this one with potentially multiple vortices touching down near greenfield, southwest of des moines. Storm chasers also hitting torrential rain and hail as they drive, alarms blaring. Minutes later, coming upon jawdropping damage with homes shredded, pieces of them tossed on top of cars. An entire neighborhood is gone. And for millions, the threat just beginning. Tonight 50 Million People from texas to michigan are once again in mother natures line of fire for severe storms, including wind gusts up to 90 miles per hour, large hail, and possible tornadoes. A danger all too familiar amid a relentless spring. As the supercell storms that spawned tornadoes become more common, close to 300 tornadoes have been reported this month. April had close to 400, twice the average. Tonight, another round unleashing as we speak. Maggie vespa, nbc news, des moines, iowa. And bill karins is watching it all. Bill, another dangerous night ahead. Lester, weve already had two violent tornadoes, and the fear is we could have a couple more. Conditions are right for that. We head to greenfield, the one we showed the pictures of where the neighborhood is just destroyed. We also recently had a very strong tornado just north of the des moines area. As we go throughout the next couple of hours, were going take the line of storms through eastern iowa. Were talking about areas like waterloo, cedar rapids, the quad cities. These are all locations where we could deal with strong tornadoes later on tonight. A wider view shows isolated tornadoes are possible up to midnight in Southern Wisconsin and actual way down into oklahoma until about 11 00 p. M. This evening. Tomorrow the tornado risk is lower, but its not zero. From areas of dallas to little rock, we have an isolated chance of a strong tornado or two, large hail and damaging winds. This threat tonight, though, lester, very scary. Bill karins, thank you. Harrowing stories from aboard a Singapore Airlines jet that killed one passenger and injured dozens after a rare encounter with severe turbulence so violent it sent people who werent belted in hurling into the ceiling. Senior correspondent tom costello reports. Reporter on the tarmac in bangkok, a Mass Casualty response to a terrifying High Altitude flight. Singapore Airlines Says at least 30 injured, some critically. A local hospital says its treating 71 passengers. One person died. The Airport General Manager says a 73yearold british man apparently suffered a heart attack. It happened when the boeing 777 flying from london to singapore hit sudden turbulence on the edge of a powerful storm over thailand. Flight radar 24 data shows the Plane Bucking like a bronco at 37,000 feet, climbing and falling. Then a controlled Emergency Descent to 31,000 feet. Photos from inside the cabin show the damage and chaos. Overhead panels ripped off. Food and bottles scattered on the floor, blood stains on the ceiling. Multiple victims evacuated on backboards. It was incredibly scary experience, seeing other people on the flight who were badly injured. Reporter atmospheric researchers report clear Air Turbulence about has only gotten worse with climate change. So we know that the amount of wind shear in the jet stream is now 15 stronger than it was when satellites first began observing it in the 1970s. Reporter heat makes the jet stream more volatile and difficult to predict. Pilots do rely on other pilots to report turbulence that they encounter. Reporter it happens every day, 5500 times a year. Seven were injured in March Of 2023 when a lufthansa flight hit severe turbulence over tennessee. In december 22, three dozen injured on a hawaiian air flight. Broken backs, broken skulls, brain injuries. A severed limb. And these are very serious conditions. And tom, unpredictable turbulence is why the airlines always say wear your seat belt. Thats right. And infants should be in car seats on planes. Parents need to know that. The ntsb is sending a team to assist in the investigation. The airline says four americans were also on board this flight. Lester . All right, tom costello with that, thank you. The testimony is over tonight in former President Trumps Hush Money Trial with closing arguments not scheduled until next week. The defense wrapping its case without calling mr. Trump to testify. Laura jarrett reports. Reporter tonight, the defense resting its case with former President Trump choosing not to take the stand in his first criminal trial. Jurors left today hearing only from robert costello, a lawyer who briefly advised Michael Cohen. Prosecutors today again trying to Paint Costello is a trumpallied emissary dispatched by Rudy Giuliani to prevent cohen from flipping on mr. Trump. Confronted with emails suggesting he was frustrated. Cohen refused to hire him, including one where he wrote, quote, cohen, quote, continues to slow play us and the president. Is he totally nuts . He is playing with the most powerful man on the planet. Costello suggested monday cohens entire story, that trump plotted to protect his Stormy Daniels to protect his campaign was all a lie. Telling jurors that Michael Cohen said numerous times that President Trump knew nothing about those payments, and that cohen said he did this on his own. Costello only one of two witnesses called by the defense team. The testimony all told running just over 90 minutes. There is no crime. There is no crime. Its a kangaroo court. There has never been anything like this that ive ever seen. Reporter the judge working with both sides for hours today to hash out critical Instructions Jurors will receive next week to aid their deliberations on the 34 counts mr. Trump faces for allegedly falsifying his business records. The outcome likely largely to come down whether jurors believe cohen, the only witness to testify that mr. Trump directed the payoff to daniels and then disguised his reimbursements to cohen, all of which mr. Trump denies. The defense spent three days grilling cohen, who has been convicted of lying under oath and was disbarred. If found guilty on the lowlevel felonies here, mr. Trump faces anywhere from four years in prison to just probation. And laura, in a separate case, there is a headline today about former trump attorney Rudy Giuliani. Yes, lester, giuliani pleaded not guilty when he appeared virtually in Arizona State court today, a case where he has been tried for his efforts to try to overturn the last election, including by submitting fake documents to congress, saying that mr. Trump falsely won. Now mr. Trump has not been charged in that case, but he is listed as an unindicted coconspirator. Lester . Laura jarrett, thank you. And President Biden went after donald trump today for sharing a video that invoked nazi language. The president called it unamerican on day when he reached out to the countrys Military Heros in new hampshire. Here is peter alexander. Reporter President Biden tonight is touting his commitment to those who served, announcing more than one Million Health care claims approved as part of the Bipartisan Pact Act he signed to expand benefits for veterans exposed to toxic chemicals. Veterans, you are the solid steel spine of our nation. Reporter the camouflage colored appeals have become familiar for President Biden and former President Trump who has slammed the biden administrations chaotic withdrawal from afghanistan. He failed on every single thing, including afghanistan. Reporter mr. Trump has won the Military Vote twice, but that support has eroded. Gulf war veteran jeff zamoyda says President Biden is a more unifying commander in chief. Joe biden is the person that i identify with more clearly as a candidate. Reporter because . Because of his staunch commitment to bipartisanship. Reporter Vietnam War Veteran lucca polla argues President Biden is leading the military in the wrong direction. Downhill. They brought in the woke that it will kill the military. Reporter meantime, the former president is facing fierce criticism for this video shared on mr. Trumps social media accounts. What happens after donald trump wins. Reporter the 30second clip uses a term associated with germanys nazi government, referring to the creation of a unified reich, among fictionalized newspaper headlines covering a Trump Victory in november. The Trump Campaign telling nbc news the video was created by a random account and reposted by a staffer who did not see the word. The posts were removed this morning. A unified reich . Thats hitlers language. Thats not americas. Reporter tonights response the latest example of President Biden trying to seize on any trump misstep, looking to warn voters about what he views as the dangers of a second trump term. Lester . Peter alexander, thank you. In iran today, thousands turning out as Funeral Services for the countrys president got under way two days after he was killed in a Helicopter Crash. Keir simmons with the nation in mourning and new details in the investigation. Reporter tonight, after day one of a threeday funeral, with huge crowds, the procession inching past mourners holding up posters of president raisi, clamoring to touch the coffin. Iran is hearing more about the Helicopter Crash that killed him. This video capturing the moment rescuers arrived at the scene. Found it, found it, one shouts, and then the grim reality takes hold. They cry, pray and sob. On Iranian State television, his Chief Of Staff who was in an accompanying helicopter describing turning back to search, and hours of desperate calls with one of those who had been on board, now one of the dead. Criticism of the late president is dangerous. A hardliner who the u. S. Says had blood on his hands, irans prosecutor warning people not to celebrate his death. But as irans State Tv Broadcast Rolling Coverage of the funeral today, iranians opposed to the regime spoke out to nbcs partner sky news. Their identities concealed to protect them. People have been handing out sweets, and in many other iranian cities, people celebrated the news by fireworks. Im not upset at all. Even though i never wish death on anyone. Reporter tonight the precise cause of the crash remains unclear. Iran says its investigating. Lester . Keir simmons, thank you. In 60 seconds, the legal fight over graceland. Is Elvis Presleys landmark home about to be sold to satisfy a debt . His granddaughters fight, next. Some people just know that the best rate for you is a rate based on you, with allstate. Because there are people out there who arent you. A lot of them. And you dont drive like. Whoa. I dont want my child being raised by a robot other drivers are not you. Yes, thank you so much to all 50 of my subscribers. Nope, definitely not you. Save with drivewise and get a rate based on you. Youre in good hands with allstate. why did i keep missing out on this . Before you were preventing migraine with qulipta . 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Reporter now a lawsuit, her daughter, Danielle Riley keough claims a false Investment Firm is trying to illegally sell graceland. According to the suit, the missouribased Naussany Investments says lisa marie borrowed 8. 3 million before her death, putting up her fathers home as collateral and never repaid the loan. Now the firm is attempting to sell graceland this thursday. But in court filings, the documents of the alleged deal are forgeries, including this one signed by a notary who denies meeting presley, or notarizing anything according to an affidavit included in the lawsuit. This is a lawsuit, but isnt what theyre alleging a crime . The allegations are civil in this complaint, but the underlying facts seem to make out criminal activity. Reporter earlier this month, a Tennessee Court put a hold on the sale. Kurt naussany who is named in the suit told nbc news he has not worked for the firm since 2015 and did not handle loans to Lisa Marie Presley. Nbc news attempted to get further comment from Naussany Investments but did not hear back. Even if this transaction was made in secret, those leave records. So that would be the obvious first place to look. Reporter with the mystery around graceland deepening, the hearing is tomorrow morning. Stephanie gosk, nbc news. Up next, the new criminal investigation launched into the Drug Overdose death of actor matthew perry. And Actress Scarlett Johansson fights back over an ai voice she says sounds just like hers. See . Homequote explorer lets you easily compare Home Insurance options so you can get what you need without overpaying. Yeah, weve spent a lot on this kitchen. Oh, yeah, really highend stuff. Sorry, thats our ghost. Yeah, okay. Hes more annoying than anything. Too bad theres mold behind the backsplash. [ sniffs ] yep, thats mold. Well, then, lets see if we can save you some money with progressive. Guess how much i originally paid for this fireplace . 23 bucks. 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More than six months after the passing of friends star matthew perry, the lapd says its working with the dea to find the source of the ketamine that Authorities Say contributed to his death. People close to perry said he was being treated with ketamine for depression, but the coroners report raised questions about why there was so much in his system. Also tonight, the showdown between a hollywood superstar and a tech giant. Scarlett johansson speaking out, saying openais latest Chat Bot Voice is way too close to her own, and she didnt give permission. Liz kreutz has details. Reporter Hollywood Mega star Scarlett Johansson is taking on one of the biggest names in tech, openai cofounder sam altman. Hey, hows it going . Hey there. The actress saying one of the five voices for openais new chatbot sounds similar to her own. Im really excited about teaming up with you. Reporter johansson, who famously played the voice of an Artificial Intelligence system in 2013 movie her hi, how you doing . Reporter saying in a statement that altman had reached out twice, wanting to hire her for the openai project, an offer she declined. But she said when she heard the demo for the voice named sky, she was shocked, angered and in disbelief over the similarity to her own. In response, altman says the company has paused the use of skys voice, but denies copying johanssons, saying in part the voice was never intended to resemble hers. But Johansson Points to a recent post by altman on x where he simply wrote her the movie he has spoken about publicly. I think her got something deeply right on the interface. Reporter the controversy highlighting concerns over online fakes and the growing Copyright Concerns posed by Artificial Intelligence. There seems to be a transparency issue here. There definitely seems to be a transparency issue here where openai is clearly trying to make their ai models better, but that also means that they have to use data from somewhere. And they are not always transparent about where that data comes from. Reporter openai, the Company Behind chatgpt is now facing several Copyright Infringement lawsuits, including from the new york times, claiming unauthorized use of content to train ai language models. Openai has said its training is based on fair use calling the times suit without merit. And openai says prior to ever reaching out the johansson, It Cast Actors to create the voices of its new chatbots. The company has yet to release the identity of those actors. Lester . Liz, thank you. Coming up, through the looking glass. The art of making it a smaller world through portals connecting people thousands of miles away, next. Portal if advanced lung cancer has you searching for possibilities, discover a different first treatment. 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Talk to your neurologist about vyvgart. Finally, two cities thousands of miles apart and the virtual link bringing them together across the ocean. Emilie ikeda and Meagan Fitzgerald tried it for themselves. Im here in new york, home to times square, broadway, the empire state building. And im in dublin with typical irish weather. The two cities are more than 3,000 miles apart, now coming together here on fifth avenue in downtown manhattan. And oconnell street in the heart of dublin. All through something called the portal. A Public Art Installation bringing the cities together in realtime with a live stream. You can dance your way over here and say what, man the portal bridges strangers, friends and even colleagues across continents. Hi there is no audio. So we have to be creative. Okay, ready . Rock, paper, scissors. Shoot the connection between new york and dublin follows portal projects in poland and lithuania, all designed by artist benediktas gylys. I think people really needs a sense of connectivity. I think this is a true purpose of the portal. The portal between new york city and dublin was briefly shut down after bad behavior on both sides. But its now open again with some added security. Its like facetime. The giant round monitors helping loved ones not feel so far away, like these friends who havent been together in more than a year. I saw you get a little emotional. What does this mean for you . Its just its wild to know that at the same moment in time we were having a meetup. Its so special. Its so cool. And this father and son separated by an ocean. For a moment, they feel just around the corner. A window into another place. Reminding us that were not that far apart after all. Meagan fitzgerald. Emilie ikeda. Nbc news. Nbc news. New york. Dublin. Nice job, guys. Thank you for watching, im lester holt. Please take care of yourself and each other. Good night. Answers after their son is killed in a fiery crash