tonight, the breaking news here. word of major resignation just hours before the democratic convention. the party turmoil. the chair of the dnc, now saying she's out tonight amid leaked e-mails. did the dnc favor hillary clinton all along? was bernie sanders right? and hillary clinton tonight, side by side with her new running mate. he's coming to her defense amid the name-calling from donald trump. you'll hear it. the other breaking headline. the sweltering heat and fires deadly. evacuations under way right now. dangerous heat alerts from kansas all the way to philly and new york. as the death toll rises, including a 12-year-old who was hiking. dramatic video of a plane spiraling, crashing into a home. witnesses running in to help. the deadly machete attack, taking aim aa

the images coming in from the scene. and the security breach at a major american airport. a man with no ticket breezing by the tsa, boarding the plane. good evening. from philadelphia tonight, where the democratic national convention hasn't even started, and we already have our first major controversy. the chair of the dnc, debbie wasserman schultz has resigned due to leaked e-mails. meantime tonight, the democratic ticket now revealed. we have new reporting on what

tonight, senator tim kaine coming to hillary's defense when asked about the name calling from donald trump. and cecilia vega, you're here with me. >> reporter: this is supposed to be about party unity. instead, this is the exact opposite. on the eve of the democratic convention, tonight, a bombshell. party chairwoman debbie wasserman shultz resigning after wikileaks released thousands of internal democratic national committee e-mails suggesting the party favored clinton over bernie sanders. an 11th-hour effort to blunt the controversy hanging over clinton's convention, and upstaging the announcement of her running mate, virginia senator tim kaine. >> senator tim kaine is everything donald trump and mike pence are not. >> reporter: fresh off their big debut, clinton

encouragement picked up by the microphones. >> go get them! >> this is great. all right. >> reporter: unlike donald trump, who spoke for 28 minutes before introducing his running mate -- >> back to mike pence. >> reporter: -- then walking offstage. clinton made kaine the star of her show. he spoke 38 minutes to her 17. >> hillary clinton, she doesn't insult people. she listens to them. what a novel concept, right? >> reporter: now, their first interview, with kaine's new role as trump attack dog on full display. clinton, asked what she calls trump, since he calls her crooked hillary. >> i don't call him anything. and i'm not going to engage in that kind of insult fest that he seems to thrive on. >> i don't want to -- she's done a good job of letting the, you know, water go off her back on this. that's not the way i feel. when i see this, you know, crooked hillary, or i see the

ridiculous. and look, most of us stopped the name-calling thing about fifth grade. >> reporter: they may be presenting a united front, but now it's democratic unity that's under threat. those hacked dnc e-mails enraging sanders supporters. in one e-mail, a top dnc staffer wonders about sanders -- "does he believe in a god. he had skated on saying he has a jewish heritage. i think i read he is an atheist. this could make several points' difference." sanders called for wasserman schultz to step down. but didn't back away from his support of clinton. >> right now we have got to defeat trump. we have to elect hillary clinton. >> cecilia vega back with us now. you've been working your sources on the tim kaine choice. >> reporter: this is about winning white, male, and independent voters. and also about giving hillary clinton a boost in the swing state of

and i'm told this also came down to chemistry, you saw them on the stage, they certainly have that. >> thank you. the hacked dnc e-mails revealing what democratic party leaders were saying about bernie sanders. the clinton campaign manager saying it's the russians trying to donald trump. jonathan karl, did he really say that? >> he did. about a month ago, the dnc computers were hacked by computers believed to be in russia. and they attribute it to experts. >> do we know if there was any pressure from the clinton camp for congressman wasserman schultz to

>> make no mistake, she was pushed out. the clinton campaign wanted to be done, turn the page. it also took a call from president obama to finally get her going. she is going to gavel in the convention, and i'm sure the bernie sanders supporters will be booing her quite loudly. >> thank you, jon. in the meantime, the trump campaign already reacting, saying hillary clinton should follow wasserman schultz's lead, due to clinton's own e-mail scandal. some saying trump's speech was too dark. and trump still talking about ted cruz. tom llamas on the campaign trail tonight. >> reporter: tonight, on the eve of the democratic convention, donald trump still bragging about his own big speech. tweeting out this video with an applause-o-meter, claiming

24 minutes of pure cheering. >> the only thing that some people said, it was a little dark. it was a little bit tough. >> did you think it was a little dark? >> no, i thought it was very optimistic. to me, it was an optimistic speech. >> reporter: but at times trump did paint a grim picture. >> our convention occurs at a moment of crisis for our nation. illegal immigrants with criminal records, ordered deported from our country, are tonight roaming free to threaten peaceful citizens. the attacks on our police, and the terrorism of our cities, threaten our very way of life. >> reporter: trump now also refusing to end his feud with senator ted cruz. >> stand and speak and vote your conscien conscience. vote up and down the ticket. >> reporter: it's been four days since cruz was booed off the stage after refusing to endorse trump, as the billionaire watched from the crowd. >> i did him a favor because had i not walked into the arena at that moment, i think they wo

>> reporter: but trump's good will ends there. he's now promising to fund a super p.a.c. to take out cruz and ohio governor john kasich, who boycotted his convention. >> yeah, i'll probably do a super p.a.c., you know, when they run, against kasich. >> okay. >> for $10 to $20 million. against ted cruz. and maybe one other person that i'm thinking about. >> reporter: it's unclear which politician trump was speaking about right there. trump is hitting north carolina, florida, and ohio this week. david? >> tom, thank you. we will have full coverage of the democratic convention in philadelphia all week long. "world news tonight," "nightline," and good morni"goo americ america", all live from philly. and a primetime special every night at 10:00 p.m.

the deadly heat and wildfires burning out of control at this hour. in los angeles, some homes already lost. hundreds of families forced to escape as the flames grow closer. at l.a.x., air quality alerts are already in place. phillip mena is on the fire lines. >> reporter: tonight, the massive wildfire raging just ten miles north of los angeles turning deadly. officials discovering a body inside the charred vehicle in this driveway. >> unfortunately that fire came through and blasted the backside of some of those homes. >> reporter: 1,500 homes evacuated. 18 now destroyed. fire sweeping down into the valleys, flames 40 feet high. >> there's a lot of devastation as you can see. around the hillsides here. >> reporter: 1,700 firefighters, even modified jumbo jets brought in to attack the blaze. choppers grabbing any available water to douse the flames.

hollywood productions. but today, firefighters are putting out the flames after it was burnt to rubble. this fire, just one of more than two dozen burning in ten states out west. david, the people living in this home, thankfully, able to escape with their lives. but tonight, no help for firefighters. it is hot and dry and no sign of rain ahead. david? >> thank you. and the heat stretching from coast to coast tonight. the unrelenting heat and sun, heat indices in the triple digits. here's eva pilgrim. >> reporter: no relief tonight for 100 million people trapped in a deadly heat already claiming at least 11 lives. >> heat exhaustion. heat stroke. patient is intubated. temperature is 102. >> reporter: in phoenix, arizona, a 12-year-old rushed to

hiking. protesters braving the heat today in philadelphia. plenty of water and extra medics on hand. >> we're keeping hydrated. >> reporter: meanwhile, a power outage leaving thousands in new york broiling without ac. here in a city like new york the heat radiating off the concrete all around you. you can see with this infrared heat camera, the sidewalk is 139 degrees. >> it's hot. yes, sir, it is. it's very hot. >> reporter: in ohio, it feels like 99. chicago, 103. and st. louis, a whopping 112. david, when you check the weather on your phone, that doesn't take into account the humidity, which we know can make it feel even hotter. david? >> let's get right to rob marciano. >> the heat

in st. louis, it felt like 112. places like nashville, d.c., heat index well over 100 degrees. near 100 tomorrow in d.c. and philadelphia, 90s through wednesday. david? >> rob marciano, tracking the heat all week for us, thank you. and from connecticut tonight, a pilot is now in the hospital after his plane spiralled and crashed into a home below. amazingly, the man inside the home survived, escaping by just a few feet. here's adrienne bankert. >> reporter: the small plane seen spiraling and plunging into this home in just seconds. the man who shot this video running to the crash scene with others to help. >> we've got a report of a small plane crash on land. >> reporter: that plane just mi

was at home watching tv. >> i ran outside and my neighbor hollered to me. he said, "there's a plane on your roof!" >> reporter: norman says he &b didn't even hear it coming. >> i guess if i had been another two, three feet closer, i would have been hit. >> reporter: the pilot airlifted from the wreckage but in critical condition tonight. he had just taken off from a local airport, when witnesses say the plane started struggling. witness reported the plane barely cleared the trees after taking off from a nearby airport. tonight, the faa is investigating. david? just two weeks until the olympics, and russian athletes will be competing. russia's entire track and field team has already been banned. tonight, russian officials a

like most of their team will be going to rio. and the third deadly attack in a week. the frightening scene playing out near stuttgart, some reports saying a woman killed was pregnant. and there are no indications tonight this is terrorism according to officials. tonight, a clearer portrait emerging of the gunman in munich, firing directly at people outside mcdonald's. he had been planning the attack for a year. and tonight, police have arrested another teenage that may have known about the planot and failed to report it. here's alex marquardt. >> reporter: the attacker began his deadly rampage firing his gun at a mcdonald's. a moment, we learned tonight, that had been in the works for a year. officials sang

media as david ali sonboly, detailed how he would carry out the shooting spree in a manifesto and tried to lure victims by posting an offer of free food on a fake facebook page. they also found his copy of peter langman's "why kids kill," which studies school shootings like columbine and virginia tech. he even visited the site of a 2009 german school shooting. the prosecutor painted a picture of a disturbed 18-year-old man who was hospitalized for two months last year for depression and social anxiety. tonight authorities arresting one of his friends suspected of knowing about the plot. seven died at that mcdonald's, and two more elsewhere. almost all of the victims were fellow teenagers. the gun the attacker used was a semiautomatic glock 17 pistol, which officials said he appeared to have bought on the black market online, and was a restored theatre prop. david? >> alex, thanks. there's still much more ahead on "world news tonight" this sunday. the security breach at the airport, a

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phone. >> it is serious. there are multiple violations going on. >> reporter: 25-year-old damarias cockerham made it all the way onto a plane bound for guatamala. finally, a gate agent pulling him off the plane, escorting him to the police. >> he could have something that could inflict deadly force on another person. >> reporter: tsa has been under fire for other security lapses. an internal test found that undercover agents were able to sneak fake weapons and explosives past the tsa in 67 out of 70 attempts. cockerham was unarmed but charged with criminal trespassing in last summer's incident. in a statement, the tsa says they have made adjustments to checkpoints at dfw, adding glass panel barriers and other enhancements to physical security. david? >> thank you. when we come back, two college football stars killed in a car accident. and the baseball all-star,

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it seems one celebration came early. an accidental balloon drop. and on stage, another reason to celebrate. in a proposal. she said yes. as crowds arrive, two special delegates have been waiting a lifetime for this moment. 93-year-old ruby gilliam, the oldest delegate from ohio, making her way by bus to philly. >> i have waited for a woman to run for president. >> reporter: the veteran who helped out in world war ii. who's been to every convention since 1988, has been a hillary supporter from the beginning. even showing clinton her own hillary doll. and 90-year-old felicia kahn, on the road, too. from new orleans, heading to her tenth democratic convention. looking forward to a day she says she thought would never come. >> this is hillary's time and she is going to win, and i'm going to be there to see what i never expected to come in my lifetime. >> i'm david muir. i hope to see yori

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>> coming up, battling the flames in the heat. firefighters injured, of pet lost after fire rips through a home in temple hill. from the national mall to the tennis court, is it too dangerous to play? hard to believe -- a hotter start to the week. drama at the dnc. 24 hour before it starts. the chairman likely will not bring the kabletown -- the gavel down. why she is walking away from the position at the end of the week. the news starts now. >> from abc 7 news, this is breaking news. >> several firefighters were injured battling the flames at a home in temple hill.