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Tonight, former president trump defiant, vowing to stay in the presidential race despite new charges against him. The Republican front runner holding a massive rally tonight after sharing the stage with most of his rivals in Iowa. One candidate who criticized the president for his legal problems booed off the stage. President Biden acknowledging for the first time his granddaughter born to his son, Hunter.

Why? Sources tell NBC News he's doing it now. A plane crashes just off a crowded beach, flipping over as people watch in terror.

It was like something out of a movie.

What went wrong? Heat emergency across much of the U.S., 116 million at risk. This helicopter rescuing hikers after they fell ill from the heat. Who will get a break soon? The coup playing out in the African country of Niger. While U.S. officials are so worried. Our correspondent, the only American reporter inside the country. And amazing body camera footage.

Police racing into a home to save a drowning toddler the moment they bring her back to life.

Oh, there you go.Oh, there you go.

This is NBC Nightly News with Jose Diaz-Balart. Good evening. We are tracking major developments that could have serious impacts on the 2024 race for president. Former President Donald Trump is holding a rally right now. It's his first since new federal charges were filed against him. Mr. Trump has been defiant in the face of his growing legal troubles this weekend, when he and most of the other Republican candidates were on the same stage.

We've got a new look at just how his rivals plan to handle his legal issues. Meanwhile, President Biden with a major reversal, acknowledging for the first time that he has a seventh grandchild, this one born to his son, Hunter. Republicans have been criticizing Biden for ignoring her existence amid the ongoing legal troubles of his son. NBC has new reporting tonight about why he is recognizing the young girl now.We've got a new look at just how his rivals plan to handle his legal issues. Meanwhile, President Biden with a major reversal, acknowledging for the first time that he has a seventh grandchild, this one born to his son, Hunter. Republicans have been criticizing Biden for ignoring her existence amid the ongoing legal troubles of his son. NBC has new reporting tonight about why he is recognizing the young girl now.

We have to reports tonight, beginning with Gabe Gutierrez was traveling with the former president. Let's go down to Joe.

Tonight, despite his mounting legal battles, former President Trump's diehard supporters are rallying around him. What do you make of all the recent charges against.Tonight, despite his mounting legal battles, former President Trump's diehard supporters are rallying around him. What do you make of all the recent charges against.

I don't believe for a minute and Trump is it?

Is it? I was just telling everybody it's God than Trump.

His rally tonight here in Erie, Pennsylvania, coming just days after special counsel Jack Smith brought three new federal charges alleging the former president tried to cover up the mishandling of classified documents at his Mar a Lago home by deleting surveillance video.

And I don't think they think that the tapes were even charges. My tapes that we gave to.

Them on stage tonight, Mr. Trump, defiant.

These are ridiculous indictments. And all they're doing is hoping for massive election interference. That's all they want to do.

Last night, Mr. Trump joined a dozen other GOP candidates at Iowa's Lincoln Dinner. Only one former Texas congressman will hurt took direct aim at the front runner. Donald Trump is running.

To stay out of prison. And if we elect.

Mr. Trump dominating the crowded GOP field, his top rival, Florida Governor Ron DeSantis, is struggling to gain traction in national polls, and he's declining to weigh in on Mr. Trump's legal problems.

I understand you want to talk about some of that stuff, and I get it. And if I were in your position, I'd probably be asking the same questions.

Also, your Republican opponent here and he's the frontrunner.

And that's why I'm saying and that's why I've said if we make it about those issues, we're going to lose. If we make it about the vision for the future, we're going to win.

Former President Trump taking the stage here in Pennsylvania just a short time ago, stressing that he believes that these charges were brought to interfere with the election, a point we expect him to repeat constantly as his campaign ramps up.Former President Trump taking the stage here in Pennsylvania just a short time ago, stressing that he believes that these charges were brought to interfere with the election, a point we expect him to repeat constantly as his campaign ramps up.

Those they gave. Gutierrez in Erie, Pennsylvania. Thank you. And now to President Biden and his decision to publicly recognize his granddaughter born to his son, Hunter. He had avoided doing so up until now. Allie Raffa is with the president in Delaware.

For the first time. The president and first lady are publicly acknowledging they have a seventh grandchild, a four year old girl named Navi, who their son Hunter fathered out of wedlock as he battled drug addiction. The child up until now not recognized by the president.For the first time. The president and first lady are publicly acknowledging they have a seventh grandchild, a four year old girl named Navi, who their son Hunter fathered out of wedlock as he battled drug addiction. The child up until now not recognized by the president.

I have six grandchildren.

The move comes one month after Navy's mother, London Roberts, a former exotic dancer, settled a paternity and child support dispute with Hunter in Arkansas. The first couple releasing a statement Friday saying, quote, Our son Hunter and Navy's mother LUNDEN are working together to foster a relationship that is in the best interests of their daughter, adding, This is not a political issue.

It's a family matter. But it's already become political, as the White House avoided the topic for months. Does the president acknowledge this little girl as his granddaughter? I don't have anything to share from here. Republicans seized on the silence.

Why don't you spend some time with your granddaughter in Arkansas?

How many grandchildren do you have using this?

And Hunter Biden's unraveling legal woes as political ammunition against the president. Hunter, in ongoing legal trouble after his plea deal to federal tax charges, fell apart this week when a Trump appointed Delaware judge raised questions about its terms. The president's commitment to family is central to his public persona. His grandchildren often appearing with him at campaign events and official trips around the world.

Hunter's eldest, Naomi, was married at the White House, and his youngest, Beau, has tagged along to Camp David.Hunter's eldest, Naomi, was married at the White House, and his youngest, Beau, has tagged along to Camp David.

I'm crazy about.I'm crazy about.

Them. The president and first lady saying they want what's best for all of their grandchildren, including privacy for their newest one. Navy.

And Al Arafa is with the president in Delaware tonight. Why did the president decide to acknowledge this grandchild now?

Yeah, well, a source familiar with the situation tells us that the president has avoided weighing in until now to give his son and Navy mother the time and space needed to navigate this holiday.Yeah, well, a source familiar with the situation tells us that the president has avoided weighing in until now to give his son and Navy mother the time and space needed to navigate this holiday.

Ali Raffa in Delaware, thank you. We are following multiple small aircraft crashes today hundreds of miles apart. One was just off a crowded beach in New Hampshire. Dana Griffin has details.

Tonight, chaos in the skies. Within hours, multiple aviation crashes across the country near Hampton Beach, New Hampshire. This plane towing a banner crash landed around noon in the ocean.

Floor of another crashed in the water out of the Navy. It was like something out of a movie.

Adam Barney was there with his family.Adam Barney was there with his family.

It hit nose first. The tail went up over the cabin and then it fell back down. People are screaming.

The pilot seemed swimming to safety.

The lifeguard brought the pilot, which is the only occupant to shore for evaluating them now.

The pilot did a remarkably great job in knowing that they didn't want to land on the beach because it was full of people to crashes.

Also happening in Wisconsin, near the site of the EAA Airventure show in Oshkosh, the largest air show in the world. The Winnebago County Sheriff's Department confirming two were killed, two others injured when two aircraft similar to these collided. Officials say this was not related to the show. And earlier this morning, the Coast Guard says a T-6 Texan plane like this crashed into Lake Winnebago.

One person was found unresponsive. Crews are still searching for another.

When you have an airshow of this size. Unfortunately, it is it is not that uncommon that each year that there are some form of accidents because there mean there are thousands upon thousands of airplanes up there.

A summer Saturday of fun turning deadly. Dana Griffin, NBC News.A summer Saturday of fun turning deadly. Dana Griffin, NBC News.

Tonight. 31 states are under heat alert. 116 million Americans at risk as the now month long heat wave is turning increasingly deadly. George Wallace has our story.

This is a dramatic moment to hikers in Arizona where rescued from the brink of death in a blistering triple digit heat. First responders say the pair had gotten stuck deep in the mountain for hours, dehydrated and without water. What is your message to people who think it is a good time to hike these mountains when it is this hot?

We want you to come out and enjoy our mountains, but you have to be smart about it. We've got excessive heat warnings every single day. If you don't have to hike, don't hike right now.

In Arizona's Maricopa County. There have been at least 25 heat related deaths already this year. Phenix now sizzling for a 30th straight day at temperatures at or above 110 degrees. Nationwide, more than 100 million people in 31 states remain under heat alerts. The brutal heat wave baking the Midwest and Northeast in what feels like triple digit heat temperatures this week leading to disaster.

No call coming in for animal cruelty in Indiana.

Eight German shepherds enroute to a canine training facility in Michigan died from heatstroke, according to police. Authorities saying the air conditioning in the box truck, they were being moved in broke. I hope that for you today in West Philadelphia, this is what survival look like. A tent, cool drinks and a small pool for children with very old will.

And these sidewalk cooling stations are lifelines in areas of the city lacking any respite from the sun. Anything that keeps things cool is probably just a godsend at this point.

Jorge Solis joins me now from Philadelphia. And Jorge, now there are storms headed your way.

That's right. I would say more than 65,000 power outages have been reported in the mid-Atlantic as a result of those severe storms moving through the region. Now, those same storms are expected to cool things off here in the northeast and you can see they are quickly approaching. Meanwhile, the south is expected to continue sweltering.

Jorge Solis in Philadelphia, thank you. And now to the coup playing out in the West African nation of Niger. Tonight, the president there is being held captive by his own security forces and U.S. officials are sounding the alarm. Our Courtney Kube is the only American correspondent on the ground in Niger.

Tonight, a strong warning from U.S. Secretary of State Antony Blinken.

She left the.

Speech to the Nigerian military leaders behind a coup to oust the country's democratically elected president.Speech to the Nigerian military leaders behind a coup to oust the country's democratically elected president.

Our economic and security partnership with Niger, which is significant. Hundreds of millions of dollars depends on the continuation of the democratic governance and constitutional order that has been disrupted.

The head of Niger's elite presidential National Guard declared himself the country's new leader two days after his forces detained President Mohamed Bazoum, who remains alive inside his residence. The U.S. government has not designated this a coup, a label that would halt more than $400 million of U.S. aid, along with some U.S. military support at a time when Niger is the strongest international partner in the fight against a growing threat from terror groups in West Africa.

That assistance, that support is in clear jeopardy as a result of these actions.

This West African nation is one of the world's poorest, but it boasts uranium mines valuable for energy and nuclear production, making it an attractive target for nations and terror groups looking to exploit the people and the resources here. The Russian mercenary volunteer group has not had a presence here in Niger, but the concern is they may try to exploit this power struggle to move in and expand their reach in West Africa.

Jose.

We're back in a moment. With a miracle caught on camera, a police officer saving a child's life. We have dramatic video to show you tonight of a miracle. A young child who nearly drowned in a pool was saved by police officers. Aaron Gilchrist has the story. And a warning. Some of the video is hard to watch.

Tonight, gratitude after a frightening ordeal for a family in Arizona. Yes, El Mirage police releasing this edited body cam video which shows officers rushing in to save a two year old who wasn't breathing after being pulled from a backyard pool. Officer Tyler Winger using infant CPR, pressing hard on the baby's chest with his thumbs.

Which is just good.

Then. Officer Garren Durand, a father of four, rushes in for the assist. Hebrew.

Hebrew. Oh, hey, are you your girl?

Eventually the little girl starts vomiting and moving. Come on, come on.

Come on. Hi, Chris. There you go. Here we go.

Signs of life and relief.

Okay, look at me.

The officers with just two years on the force were just minutes into their shift last Saturday when they answered the call.

It's very emotional when you save a life, and they were thrilled that they got the job done.

Hildebrand says life saving skills are part of every officer's training. This incident ruled an accident. The toddler out of the hospital and back at home.

There we go. I was so moved watching that body worn camera to save a life. It just doesn't get any better than that.

A young life saved and the job well done. Erin Gilchrist, NBC News. Come on.

After his health scare this week, bronny james is looking and sounding great. Tonight. His dad, LeBron James, posted this video of bronny playing the piano five days after he went into cardiac arrest during USC basketball practice. Bronny James, who was 18, was released from the hospital Thursday and joined his family for dinner last night at a Los Angeles restaurant.

That's NBC Nightly News for this Saturday. Kate Snow will be here tomorrow night. I'm Jose Diaz-Balart. Thank you for the privilege of your time and good night.

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