And a report from rio where its already game on. Nightly news begins right now. Announcer from nbc news World Headquarters in new york, this is nbc nightly news with lester holt. Good evening. Im Savannah Guthrie in for lester tonight. In a sense there are two trump campaigns tonight. The one that publicly Officials Say is right on track with rumors of internal infighting and panic vastly overblown. And then theres the one openly breaking with Top Republican leaders fending off controversy after controversy to the point some worried trump allies are reportedly thinking of confronting the candidate. Add to that new concerns over what would happen if a President Trump had access to this countrys nuclear codes. Lets get right to Hallie Jackson on the campaign trail from jacksonville tonight. Good evening. Reporter good evening. Donald trump has never had a twoday period like this. And what happens in the next two days, how he acts at rallies like this one will determine whether his campaign recovers or whether some republicans say goodbye for good. Publicly everythings fine. The campaign is doing really well. Its never been so well united. Reporter privately, anything but. Multiple high level gop sources telling nbc news of a possible intervention with top Trump Supporters rudy giuliani. Real and over due says one source familiar with the plan as they try to get the trump train back on track. Currently in, quote, crazytown. As a Top Republican tells nbc. Even ally Newt Gingrich calling his candidate unacceptable right now. President george w. Bush taking aim at his isolationism. Trumps team insists there is no intervention. No problem. The clinton may ma sheen may not like it, but were prepared for the fight. Reporter the fight now inside his own party. After trumps refusal to endorse House Speaker paul ryan. Even mike pence splitting with his running mate. I strongly endorse ryan. Hes a longtime friend. Reporter the deep anxiety in conservative circles with this question, could you trust trump with the Nations Nuclear codes . One Top Republican National Security adviser writing, imagine having to turn launch keys not knowing if we were under attack or if it was because a foreign leader said a mean thing on twitter. But even after a list of controversies in just the last 24 hours, trumps still within striking distance of hillary clinton. Those are the elite Republican Party hes in trouble with. Not the regular Republican Party like me. Reporter some supporters hoping in the gop civil war, its trump who will prevail. Hallie jackson, nbc news, jacksonville. Reporter im kristen welker. Hillary clinton looking to capitalize on Donald Trumps missteps in Battle Ground colorado. If he wants to make America Great again, he should start by making things in america. Reporter clinton looking to pick off trump support among working class voters today at a tie company accusing trump of outsourcing. I really would like him to explain why he paid Chinese Workers to make trump ties. Reporter and shes picking up an endorsement from california gop gubernatorial candidate and hewlettpackard ceo meg whitman. Whitman writing in a statement, trumps unsteady hand would endanger our prosperity and National Security. I have decided to support Hillary Rodham clinton. This following scathing remarks from whitman made in march. I think donald trump is a dishonest. Reporter Campaign Sources tell nbc news theyre courting the independents and republicans. Already winning over Mike Bloomberg and mark cuban. The first to pledge his support for clinton. But trump is still competitive announcing an 80 Million Fund Raising event. Catching up to clinton who netted 90 million last month. Still with voters struggling to trust her, clinton also has vulnerabilities heading into the fall. We are almost 98 days away from this thing. This is not the time for a victory lap. This is the time, again, to hunker down, to continue to sharpen the message and work twice as hard as we did yesterday. Reporter hoping that work can turn the Never Trump Movement into the im with her campaign. Kristen welker, nbc news, washington. For more on all of this, lets go to our political director moderator of meet the press, chuck todd. And chuck, the question is, is there really an intervention in the works . Would donald trump even accept such a meeting . There is a ton of concern with a lot of Republican Leaders mostly in washington. It has to do, of course, with the treatment of paul ryan in particular. But it has to do with the fact that he has just had the six worst days of the general election and they dont want it to get worse. Whether you call it an intervention, its sort of the same thing that got them to get manafort as campaign manager. That got donald trump to go with mike pence rather than Newt Gingrich. Plea with the kids. That has been the key to getting trump to comport with party wishes before. So ultimately thats what its about. Will the kids be the ones to intervene . Chuck todd in washington, thank you very much. We turn now to new images showing the terror inside a passenger plane moments after it crash landed. Hundreds scrambling to escape the emirates jet after it exploded at the dubai airport. We get more now from nbcs kelly cobiella. Reporter a boeing 777 on fire. Smoke billowing from the fuselage. This new video purports to show the panic inside. Passengers trying to grab their luggage. Jump jump jump leave your bags behind reporter the crew trying to evacuate before this. Right after we got out, the plane blew up. Reporter Jarrett George was on board and said there was no warning of an emergency landing. After the plane stopped, then the smoke started coming inside. And they were saying just jump, just jump. Reporter remarkably all 300 passengers and crew got out alive. There was one fatality. A firefighter battling the flames. The fire gutted the plane from cockpit to tail. Tonight an Aviation Industry source told nbc news one possible explanation. An aborted landing because of powerful gusts. Or wind shear. That would have been quite often beyond the control of the pilots to avoid contacting the ground. Reporter investigators now look to the pilots d the black boxes for answers. Kelly cobiella, nbc news, london. A troubling first to tell you about tonight. A washington, d. C. , transit officer accused of trying to help isis by coming to the aid of a man he thought was traveling overseas to join that terror group. This is the first u. S. Law enforcement officer to face such a charge. Nbcs Pete Williams now with the story. Reporter police and federal agents today searches the suburban Washington Home of nicholas young, a veteran of the d. C. Transit police accused of helping a man he thought was going overseas to join isis but who was working undercover for the fbi. The fbis been watching young and his house for nearly six years. Ever since a friend was arrested for trying to join a terror group in somalia and another friend was arrested for plotting to set off a bomb at the u. S. Capitol. Neighbors say they kept their distance. We knew something was weird about him, we just never expected it to be, you know, Something Like this. Reporter Court Documents say young was interviewed by the fbi five times over the years telling them he collected nazi memorabilia and twice went to libya to join rebels fighting the gadhafi regime. He met with operative 20 times and bought 240 of gift cards for apps scrambling Text Messages making them impossible to intercept. You have to look at all potential threats seriously. And you have to try to disrupt those that appear to be developing in dangerous ways. Reporter no comment from young who appeared briefly today in court or his lawyer. The fbi says he told friends he was constantly on guard fearing he was under surveillance apparently unaware that he really was. Pete williams, nbc news, alexandria, virginia. And now to the fire storm facing the president tonight. Did the u. S. In effect pay ransom to iran to free american prisoners at the very moment the Obama Administration was implementing that much heralded Iranian Nuclear deal . The white house says no. But critics are saying the timing is deeply troubling. Heres nbcs chief Foreign Affairs correspondent andrea mitchell. Reporter it is a tale of two exchanges. Four american prisoners finally released from iran last january. At midnight an unmarked cargo plane loaded with cash from the netherlands and switzerland takes off for tehran. 400 million of irans money frozen by the u. S. Since the hostage crisis in 1981. Is the payment coincidence or ransom . Violating a long standing u. S. Policy not to pay to free captive americans. The president the next day claiming no connection. With the nuclear deal done, prisoners released, the time was right to resolve this dispute as well. Reporter firing up critics today, donald trump pouncing. This was started by crooked hillary clinton. Reporter although it took place four years after she took office. We basically paid ransom to the iranian regime. Reporter the administration aggressively defending the deal. We do not pay ransom. Period. This was not ransom. Period. Reporter former prisoner Jason Rezaians brother. Im thankful the administration did everything they could to bring him home and others as well. Reporter but does it damage u. S. Credibility as it did a no ransom policy the Obama White House sticks to when refusing to bargain with isis. You should never pay ransom for hostages. Im concerned the iranians might think thats the deal they got. Reporter the white house says this deal actually saved the taxpayers billions in interest and penalty. Because an International Court was about to impose that on the u. S. For dragging its heels. Still it is a toxic issue to erupt for a former secretary of state this close to the election. Savannah . All right, andrea. Thank you. Now to rio where the olympic torch has reached the city and were just two days away now from the Opening Ceremony. Today we learned michael phelps, the most decorated olympian in history will be the flag bearer for the united states. This as competition got underway tonight. And some of the u. S. Athletes took the field. Miguel almaguer in the olympic park tonight. Reporter the olympic torch now in the city of samba. There was as much celebration as security here. Clashes with police last night. Some trying to extinguish the torch calling these the games of inequality. But today the games go on. The u. S. Womens soccer team on the field. And here comes phelps to the wall reporter while another favorite to strike gold, michael phelps, learned he will be team usas flag bearer. What does that mean to you . To even be nominated to carry the flag is an honor to me. Then to have my teammates select me to carry the flag into opening ceremonies, its an absolute tremendous honor. Reporter phelps has never walked an Opening Ceremony choosing instead to rest up instead. In every other olympics i felt laser focused on every little thing that i didnt get to enjoy or experience something but im enjoying this process a lot more. Reporter phelps and american swimmers could compete against the russians. With much of the russian delegation barred from competition for doping, some of their athletes are still appealing that decision tonight. But for team usa, the stage is set. Opening ceremony is in two days. Miguel almaguer, nbc news, rio. And a program note, lester holt begins anchoring our live nightly News Coverage from rio tomorrow night. Still ahead from here tonight, living in fear of zika virus in the u. S. The extreme measures pregnant women are taking to keep their babies safe. Also monsoon flash floods overwhelming neighborhoods, trapping cars. The chances of this happening . Only once every 100 years. Were back now with the battle to stop the spread of zika in the u. S. Late today floridas governor announced that free testing will be offered to all pregnant women in the state. And while no new home grown cases were reported today, concerns remain high as nbcs Kerry Sanders explains now, many expectant moms arent taking many chances. Reporter 91 degrees outside in miami, but amanda romero, 37 weeks pregnant, is doing everything she can to avoid contact with mosquitoes like wearing long sleeves today and moving quickly from the house into the car. I have a lot of friends that are pregnant right now and all of us are kind of scared saying bug spray is our new perfume. Reporter at body belly baby today, some pregnant moms might leave town. I actually killed a mosquito inside our house last night. And my husband said maybe its not a bad idea to go to california. My sister lives there. Reporter obgyns like Rebecca Martinez telling mothers to be their anxieties are justified. Weve never faced a situation like this. In the 30 years that ive been practicing. Im scared for my patients because the recommendations change daily and i know how scared they are. Reporter last nights heavy rains left perfect mosquito breeding grounds. In a first, the city vacuumed those puddles. The nasty weather also delayed this Mosquito Control plane from taking off. In addition to the already intense efforts on the ground, the battle plan . Spray a tenmile area around the zika zone with an insecticide called naled. Its been used for 50 years. Would i stand outside while the planes are going over . I wouldnt. But i also know im not going to absorb a toxic amount of pesticide. Reporter experts say folks who live in this target zone and hear the plane should not only get indoors but wait about two hours before coming back out. Kerry sanders, nbc news, miami. And were back in a moment with a big honor for a little boy whose story has touched so many of our viewers. Were back now with torrential flooding from a historic rainstorm slamming phoenix, arizona, swamping parts of the city. Just incredible scenes there. And the threat isnt over this evening. Lets get the very latest from nbcs joe fryer. Reporter in arizona the monsoon rains came down hard and they kept coming. The National Weather Service Called it a 100year event. Desert cities pelted with two inches of rain in just an hour. Submerging streets, overwhelming entire neighborhoods, trapping motorists on the i17. The citys water pumps were no match for the flash floods. Commuters traded time for safety. I watched it rain for about an hour, it seemed like. It rained really hard. Hardest ive ever seen. Reporter today 10 million americans across the southwest are living under a Flash Flood Watch in what has already been a deadly week. Theres people in the water reporter in maryland, newly released 911 call from the deluge that killed two provide realtime reaction to the devastation. Whats happening, maam . The water has broken through the floor. Reporter six inches of rain creating a torrent stronger than cars. We cant go outside. I tried to walk in that current. Couldnt do it. Reporter rising temperatures giving way to rising waters with catastrophic results. Joe fryer, nbc news. We have an update now on a brave little boy who many of our viewers will definitely recognize. 9yearold zion harvey got a big honor at last nights Baltimore Orioles game. He threw out the first pitch. We profiled zion a little over a year ago. He became the first child ever to receive a double hand transplant then. Zion lost his hands and feet to a life threatening infection when he was just a toddler. When we come back, a teenager going for gold. Were with the youngest american competing in the rio games. Next at 6 a sheriffs deputy barred from going into any jail. Raj take vo the investigation involving a murder suspect, a cell phone and a burrito. Janelle vo plus when a macys credit card isnt a macys credit card. Nbc bay area responds. Janelle close the news is next. Janelle take vo right now at six and finally tonight, ever since table tennis became an olympic sport at the seoul games in 1988, the u. S. Has never brought home a medal for it. But that could all change in rio thanks to a teenager whos already got a major claim to fame on team usa. Jolene kent with the story. Reporter at just 16, kanak jha is the youngest american athlete to qualify for the rio olympics. And will now head to rio. I dont think it matters how old a person is because in the end you just want to win. Reporter hes the son of immigrants and like so many tales in silicon valley, kanak got started in his familys garage. At just 5 years old. Playing with his mother karuna jane. I started playing because nobody wanted to play with him. He was too young below the table and nobody wanted to play with him. Reporter his older sister humored him and eventually kanak started to win. I had it. I was going to hit it next shot. We were competitive for a long time. We wanted to beat each other. Reporter soon the kid wonder was filling drawers and shelves with trophies and medals. In some ways kanak is a typical american teenager who likes playing video games in his spare time. But he doesnt have much of it. Kanak takes his High School Courses online. So he can practice up to six hours a day. Working on his explosive footwork and strategic spin. Are you giving me your best here . Coach massimo says kanak has everything. He has the skills and hands and great determination. So you put everything together and it comes a big talent. Reporter his childhood idol tim wang has taken notice and now theyre olympic teammates. Hes like a dog that bites onto your leg and wont let go no matter how hard you shake him. Reporter for kanak success means physical strength and staying cool under pressure. Anything you do right before you go out for a match . I wouldnt say im superstitious, but i do say some stuff to myself just to calm me down and its like a mantra, kind of. Reporter want to share it with us . No. Sorry. Reporter its a secret. Yeah. Reporter a secret he hopes will take him straight to the top. Jolene kent, nbc news. Go get em. Thats going to do it for us on a wednesday night. Im Savannah Guthrie. See you tomorrow Morning Bright and early on today. From all of us at nbc news, thanks for watching and good evening. Right now at six the bagged lunch that has a sheriffs deputy in trouble tonight. Right now at 6 00, the bad lunch that has a sheriffs deputy in trouble tonight. Hes accused of trying to deliver continra band to a murd suspect inside the San Francisco hall of justice. The news at 6 00 starts right now. Thanks for joining us, everyone, im janelle wang. Im raj mathai. He smuggled something inside a burrito. We learned that sheriffs deputy is under investigation for trying to deliver a cell phone to a murder suspect in jail. That phone was hidden inside of a burrito but did the deputy know about it . Nbc bay areas Stephanie Trong joins us in San Francisco this evening. Stephanie, how did he get caught and what happens now . Reporter yeah, raj, good question. That all remains pretty unclear. What we do know is a notice went out with this deputys name, his badge number and his picture instructing all sheriffs departments staff not to let him, this deputy, into any secured fills and this warning going out friday just after investigators discovered this alleged smuggling plot here at the hall of justice. The alleged handoff happened outside the San Francisco hall of justice. A cell phone stuffed inside a burrito carried in a bag. Law enforcement sources tell nbc the area the deputy in question bypassed metal detecters at the entrance on his way to delivering the bag to murder suspect Michael Green who wases locked up on the seventh floor. Green is on trial accused of killing a woman and injuring another at a market nightclub shooting back in november 2013. This is a huge red flag. Reporter public defender callhe