And a homecoming fit for a king. Tonight, our interview with lebron james. Good evening. And we begin tonight with federal authorities now revealing what they say was a plot to kill donald trump. A man driving across state lines, showing up at a rally in las vegas and reaching for an officers gun. Abc news obtaining a federal complaint, Authorities Say that man told the officer he was there to get trumps autograph. And thats when he tried to get the gun. Abcs senior justice correspondent Pierre Thomas leading us off. Reporter as the donald trump rally got under way this weekend at the Treasure Island hotel and casino, a young man approached a Police Officer stationed at the event and asked for an autograph. Then without warning, the man went for the officers gun, trying to take it away. Only to be quickly subdued. Authorities now say that michael sandford, 19, allegedly told the secret service that this was an attempt to kill trump. A complaint obtained by abc news claims sandford, who has a british drivers license, had been planning to assassinate trump for about a year. He allegedly told the secret service he had driven from california to las vegas on june 16th to kill trump after seeing news reports that the candidate would be there. A day later, he went to a vegas gun range to learn how to shoot. It is the latest security scare involving trump, who also had a man try to rush the stage of an ohio rally in march. And Pierre Thomas has been talking with his sources at the secret service. Pierre, no word on a motive, you were telling us, but federal Authorities Say there was a backup plan . Reporter david, thats right. He allegedly told the secret service that if he were on the street tomorrow, he would try this again. And he allegedly said if he did not get a chance to attack in vegas, he had a backup plan to go to an upcoming trump rally in phoenix, arizona, to try to kill trump there. David . Pierre thomas, thank you. Camp tonight, a major shakeup. One of the chief aborchitects o the Trump Campaign so far has been fired. Corey lewandowski is out, a hes now talking to us. The seismic move comes amid speculation it was Donald Trumps own children who wanted him out. Ivanka trump and donald trump jr. And it comes amid a new poll just out tonight. Hillary clinton leading trump by seven points. Abcs tom llamas, oneonone tonight with the campaign chief now out, asking, did he see this coming . Reporter tonight, a Major Campaign shakeup. Donald trump Firing Campaign manager corey lieu wewandowskil. Did this take you by surprise . I dont know if thats the response i would have. But what i do think is that the general election is a very different type of campaign than a primary election process. And understanding that people want to change the way that is campaign is run, look, thats fine. Reporter sources tell abc news trumps children fueled the effort to dump lewandowski. I had a great relationship change just because my positions changed. Reporter trump had refused to fire lewandowski months ago after this video surfaced showing him grabbing a female reporter trying to ask trump a question. The billionaire candidate stuck by lewandowski from the getgo. I know him so well, he happens to be right here. I can tell you, i dont see him doing that in a million years. I have a wonderful guy, a campaign manager. The easiest thing, corey . Youre fired. I cant do that . Cant do it. Reporter prosecutors later dropped misdemeanor battery charges. Corey, good job, corey. Good job. Reporter but now is facing sliding poll numbers. Hi, south carolina, im ivanka trump. Hi, nevada, im ivanka trump. Aloha hawaii, im ivanka trump. I think its fair but in many respects he was coming to that on his own. We were there to help augment that and really think it through with him. Reporter trump now also playing damage control for his response to the orlando shooting. Again, making the case that people in that nightclub should have been armed. If some of those wonderful people had guns strapped right here, right to their waist, or right to their ankle, and this son of a [ bleep ] comes out and starts shooting and one of the people in that room happened to have it and goes boom, boom, you know what . That would have been a beautiful, beautiful, sight folks. And tom llamas with us live tonight. Donald trump appearing to clear if i that message about people in the nightclub being armed, tom . Reporter thats right, david. On twitter, trump saying that when he talked about people being armed at the nightclub, he was talking about employees and security guards, not the people drinking, having a good time. David . Tom llamas with us again tonight. Thanks, tom. In the meantime, we turn now to the recordbreaking heat tonight. It has now turned deadly. The wild fires in the west, temperatures reaching 120 degrees in the southwest. The heat so dangerous, in fact, planes could not land, fear of blown tires on blistering tarmacs. The heat, of course, fuming those wildfires in the west. In l. A. County, for example, burning so close to a crowded neighborhood late today. Several deaths reported already. Two of them at a park. And just look at the heat moving across the country. The pink there is the hottest and its going to move the all week long. Where it hits next in a moment, and the firefight at this hour. Abcs Neal Karlinsky in the west tonight. Reporter tonight, the heat emergency out west has First Responders working around the clock, rescuing this man today, overcome by tripledigit temperatures along a canyon. Were with the same team a short time later on yet another heat call. Hot days like this, you must get a lot of calls like this. Yeah, for sure. Weve seen an increase all weekend. Reporter already at least four heatrelated deaths in arizona, including three hikers an a mountain biker. Those hot, dry conditions, perfect for fires. This fire is spreading very, very rapidly right now. Reporter this blaze outside los angeles today prompting new evacuations, adding to wildfires burning in a half dozen states. In glendale, california, frantic parents had firefighters break into their car after their daughter was accidentally locked in. We want to get here fast because we know the consequences. Reporter this plane from houston couldnt land in phoenix because the pilot feared his tires might explode. We have our heat gun. Going to check temperatures. Right here, the pavement is 171 degrees. 141 degrees. 175 degrees. The dangers are real. And the symptoms, headache, fatigue, you even stop sweating, come on frighteningly quick. Weve had people as soon as five minutes from the time they get outside, the conditions are really difficult to deal with. Reporter its 112 degrees as i stand here right now. Doesnt take long before you can really feel the stay inside unless you really have to, and drink lots of water. David . Just incredible heat there in arizona. All right, thank you, neal. Lets get to meteorologist rob marciano, because this whole system is moving across the country. Reporter its been a Long Duration event. Today is the peak of it. But it is expanding. Records in phoenix and vegas today. But heat advisory continues through at least wednesday for most of these cities. It does expand tomorrow. Look at the high temperatures expected. Could break another record in phoenix and vegas. Near 100 in Salt Lake City and denver. We start to push off to the east. Cool front trying to drape south in the upper midwest. Severe storms from omaha to columbus, ohio. Then, the front just sags across the midatlantic tomorrow. Could see rough weather from norfolk from des moines to bismarck. Damaging wind and big hail. Cooling rain with this. Southwest certainly wishes they had had. Rob, thank you. Next tonight, to the 28 minutes on the phone with the gunman, inside that orlando nightclub. The fbi has now released transcripts of the calls with that gunman. The effort to get him out to save more people inside that club. What we never heard before. And abcs linzie janis in orlando. Reporter tonight, the chilling details of what the gunman said during that threehour siege. From the nightclubs bathroom, where he had retreated with several hostages, calling 911 30 minutes after the gun fire started, telling the dispatcher, i want to let you know, im in orlando and i did the shootings. What i can tell you is that while the killer made these murderous statements, he did so in a chilling, calm and deliberate manner. Reporter when asked his name, omar mateen responds, my name is, i pledge allegiance to abu bakr al baghdadi, of the ice lammic state. Authorities initially redacting that pledge, but late today, releasing it. Over the next half hour, hostage negotiators calling him on his cell pne to hear him saying the reason hes doing is because he wants america to stop bombing his country. Reporter mateen threatening with bombs, saying, im going to ignite it if they try to do anything stupid. Claiming he had a vest like the kind used in france. Then, silence. He stopped answering his phone. An hour later, Police Pulling out an air conditioning unit, allowing eight victims to escape. And finally, busting through an exterior wall. Today, authorities answering criticism they waited too long. I think there is this misconception that we didnt do anything for three hours. And im just trying to clarify that thats absolutely not true. And linzie janis with us live tonight from orlando. And linzie, there is also new information about the gunmans final days including a spending spree . Reporter thats right, david. Abc news has learned that just six days before the attack, the gunman went to a kay jewelers spending nearly 9,000. He did not pay cash. And tonight, authorities are investigating that purchase. David . Linzie, thank you. And one week now after the orlando massacre, and a new poll showing more than half of americans now support reform. And 92 are in favor of stricter background checks. The senate at this hour taking up that call to action, voefgt on four proposals to prevent suspected terrorists from buying weapons and expand background checks. All four were voted down in the past, tonight, two of the four have already been voted down. Well stay on it. From nashville tonight, a conviction in a brutal case of campus sexual assault. A former vanderbilt Football Player found guilty for encouraging three of his teammates to assault an unconscious woman who he had been dating. The verdict comes after the voer controversy of the lenient sentencing in some eyefuls convicted in another sexual assault. Heres abcs reporter tonight, after three years and two trials, 23yearold former Football Player brandon vandenburg, convicted on multiple counts of aggravated rape and sexual battery. Now facing a prison sentence of 15 to 25 years. The former athlete and three of his teammates were accused of sexually assaulting a fellow student in a College Dorm Room after a night of drinking. Surveillance video showing the men carrying the unconscious victim into the building. The next thing i remember is waking up in an unfamiliar room around 8 00 a. M. The next morning. Reporter while vandenburg didnt physically assault her, he was convicted of facilitating and encouraging the entire thing. This, on the heels of the outrage over former stanford swimmer brock turner, sentenced to just six months in county jail after being convicted of sexually assaulting an unconscious woman. Reporte all the counts in california, and the max is still just 14 years. Reporter david, vandenburg, the former Vanderbilt University student, is scheduled to be sentenced next month. David . Mara, thank you. Overseas tonight, and to the worldwide refugee crisis and the staggering numbers now revealed. The u. N. Is now reporting that in 2015, 65. 3 Million People were displaced by conflict and persecution, up 10 from a year earlier. Thats a postwar high, driven from their homes in syria and afghanistan. Youll remember our reporting from hungary and we saw that refugee crisis ourselves. More than 1 Million People flooding into europe last year alone. Next tonight, to a dangerous lifesaving journey to the bottom of the world. Two small planes are on their way to the south pole to rescue a worker in need of Urgent Medical help. They are battling temperatures of mip nunus 70 degrees and 24 darkness. Abcs Alex Marquardt on their progress tonight. Reporter tonight, the two planes landing on the edge of antarctica, prepping for the most dangerous part of the rescue. Just one will make the 1,500mile flight in the dark. The sun set for the winter in march and wont rise again until august. The temperatures now averaging 70 below, at which jet fuel can freeze. You need a good Weather Window to make it from that base direct to the south pole. Reporter at the pole, at least one person needs an immediate medical evacuation and a second might come out, as well. We dont have the capabilities at our facilities to handle this particular emergency. Reporter this is just the third rescue of this kind attempted in 60 years. In 1999, a doctor at the station diagnosed herself with breast cancer. Unable to get out, she gave herself chemotherapy. So, tonight, a race so the pole. A place so unforgiving, so remote, that the last person who was evacuated called it harder to reach than the International Space station. Alex marquardt, abc news, there is still much more ahead on world news tonight this monday. The consumer alert tonight. Are you owed free tickets from ticketmaster . Also, the rising star who was killed, the young actor from star trek, trapped between his suv and his driveway gate. Now, we learn his suv had been recalled and what every driver should know. Also tonight, the nascar star beaten and knocked out in a parking lot. News continue about his alleged attackers coming in now. And then, of course, the celebration in cleveland today. 52 years in the making. The cavaliers return home with the nba title. And to a homecoming fit for a king. Our interview with lebron james, coming up tonight. So guys with ed can. Take viagra when they need it. Ask your doctor if your heart is healthy enough for sex. Do not take viagra if you take nitrates for chest pain or adempas® for pulmonary hypertension. Your Blood Pressure could drop to an unsafe level. To avoid longterm injury, seek immediate medical help for an erection lasting more than four hours. Stop taking viagra and call your doctor right away if you experience a sudden decrease or loss in vision or hearing. Ask your doctor about viagra single packs. Defianour citracal bones. Easily absorbed calcium plus vitamin d. Defy bone aging with citracal maximum. Our highest level of calcium plus d. Next tonight here, to the stunning death in hollywood. A young actor, a rising star, known for his work on star trek. He was killed, trapped between his suv and his driveway gate and it turns out, his jeep is one of hundreds of thousands included in a recall. Heres abcs matt gutman. Reporter Anton Yelchin was a fast rising hollywood star. Magnetic as ensign checkv, pavel andrevich, hir. Reporter in the hugely successful star trek reboot. The 27yearold cut down by that freak car accident outside his l. A. Home early sunday morning. Police tell abc news yelchin left his 2015 Jeep Grand Cherokee while pulling out of his steep driveway, the vehicle apparently rolling back, fatally pinning him against this gate. The force of that 5,000pound suv so powerful that it bent these bars. Its the same model jeep that was recalled over a confusing gear shift, allegedly causing a rollaway problem in over 800,000 jeeps and chryslers. Right now, im in drive and putting it into park. You can see, the gear shift toggles back to its original prosituation. Whats confusing is, if you are not looking, its hard to tell what gear youre in. 212 crashes and 41 injuries have been blamed on this rollaway problem, and now possibly the death of a hollywood star. David, chrysler says the fix just became available at the end of last week for some of the vehicles. But it hasnt yet notified any of its customers. David . Matt gutman in los angeles. Matt, thank you. When we come back here tonight, the medical alert for parents and grandparents. How many concussions in children go unnoticed . Staggering number in tonight. The nascar star and his daughter, beaten and kicked in a parking lot. There is news tonight about the three suspects coming in now. Then, the major settlement with ticketmaster. Are you owed free tickets . The index is next. Arthritis hi. Even the smallest things became difficult. So i talked to my rheumatologist. And he prescribed enbrel. To help relieve joint pain and help stop further joint damage. Enbrel may lower your ability to fight infections. Serious, sometimes fatal, events including infections, tuberculosis. Lymphoma, other cancers, and allergic reactions have occurred. Tell your doctor if youve been someplace where fungal infections are common. Or if youre prone to infections, have cuts or sores, have had hepatitis b, have been treated for heart failure, or if you have persistent fever, bruising, bleeding or paleness. Dont start enbrel if you have an infection like the flu. Get back to the things that matter most. Ask how enbrel can help relieve joint pain and help stop joint damage. Enbrel, the number one rheumatologistprescribed biologic. The possibility of a flare was almost always on my mind. Thinking about what to avoid, where to go. 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. The wolf was huffing and puffing. Like you do 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. She said. Symbicort could help you breathe better, starting within 5 minutes. Symbicort doesnt replace a rescue inhaler for sudden symptoms. Symbicort helps provide significant improvement of your lung function. Symbicort is for copd, including chronic bronchitis and emphysema. It should not be taken more than twice a day. Symbicort contains formoterol. Medicines like formoterol increase the risk of death from asthma problems. Symbicort may increase your risk of lung infections, osteoporosis, and some eye problems. You should tell your doctor if you have a heart condition or high Blood Pressure before taking it. Symbicort could mean a day with better breathing. Watch out, piggies children giggle symbicort. Breathe better starting within 5 minutes. Call or go online to learn more about a free trial offer. If you cant afford your medication, astrazeneca may be able to help. To the index of other news. A new health alert. A study revealing more than half of all childhood concussions are up to 2 million children under the age of 18 suffer concussions every year. More than 1 million cases may not get reported to doctors, meaning injuries may not receive the medical attention they need. Study appearing in the journal pediatrics. The famous nascar driver attacked. 57yearold mike wallace and his daughter were beaten while leaving a concert in charlotte. Wallace says he was punched, kicks and knocked unconscious by three men. His daughter was hurt trying to protect him. Three suspects were arrested and released on bond. A consumer headline tonight involving ticketmaster and this question. Are you owed tickets . Ticketmaster is giving millions of customers vouchers for free tickets, paying 386 million to settle a longrunning class action lawsuit. The company was accused of charging fees that were deceptive and excessive. Anyone who bought tickets through the ticketmaster website of 1999 and 2013 will be notified if they are eligible. We have more on our website. When we come back tonight, were on the scene in cleveland for that homecoming, plus that video from vegas. And our oneonone with lebron james. [ park rides, music and crowd sounds ] oooh [ brakes screech ] when your pain reliever stops working, your whole day stops. Excuse me, try this. But just one aleve can last 12 hours. Tylenol and advil can quit after 6. [ cheering ] so live your whole day, not part. With 12 hour aleve. Introduces new, easytoswallow tablets. So now, there are more ways, for more people. To experience. Complete protection from frequent heartburn. Nexium 24hr. The easytoswallow tablet is here. With usaa is awesome. 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Cleveland reporter some of these people have been lining up for hours just to get a glimpse of king james, but it wasnt that long ago, when they were lining up to see him out. Feeling abandoned, fans turned on james when he left to play for miami in 2010. James, returning two years ago, title. Last night, delivering the greatest comeback in nba history. Sealing it with this unbelievable block. Oh, blocked by james reporter james collapsing in tears under the weight of a 52year championship drought now lifted. Mvp mvp reporter the king, unanimously voted finals mvp, cementing his place in basketball history. I sit some place that no one has been. And my teammates, as well. Its truly amazing. Reporter after defying the odds, the team detoured to vegas for an allnight celebration, before their try yum fan rurnt home. Woo reporter alex perez, abc news, cleveland. A promise kept. Theyre still partying in cleveland tonight. 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