how far temperatures drop on 12 news welcome to "world news tonight." we're following a mass casualty event on an american highway. the tour bus ramming into a truck. at least 17 killed, dozens hurt. the highway shut down for hours. investigators now on the scene. fi donald trump, losing ground in the polls. now, his own campaign staff acknowledging he's falling behind. all-out assault. the new offensive against isis, backed by u.s.-led air strikes. martha raddatz in the region tonight. dangerous ride. a police officer taking a

traffic stop erupts in gunfire. and, reverse the curse. the chicago cubs making their first trip to the world series since 1945. now, hoping to finally shake the curse of the goat. good evening. thanks for joining us on this sunday. i'm tom llamas. we begin with the highway horror, the southern california. a tour bus crashing into a big rig. at least 13 killed, dozens hurt. the bus crashing on interstate 10. tonight, we're learning more about the tour company and that driver. here's adrienne bankert. >> reporter: tonight, investigators scrambling to determine the cause of this

california highway. >> i've never been to a crash with 13 confirmed fatal accidents. it's tough for all of us. >> reporter: just before dawn, a bus slamming into the rear of a semi truck. survivors telling police they believe all the passengers were asleep at the moment of impact. officials saying most of the 13 bus. the force of the collision so severe, the bus careened 15 feet into the bed of the truck. this is all that's left of the semi behind us. it appears the big rig swallowed the bus. officials saying there were no signs the driver hit the brakes. the highway shut down forhours.

tom, the scene is still so chaotic here. i spoke with a couple of families who say they're waiting to find out if their mother and grandmother survived. tom? >> thank you. and now, to a fight to the finish between donald trump and hillary clinton. trump's team acknowledging he's behind in the polls. clinton, 50%, trump, 38%. a wider polls, but most showing clinton establishing a solid lead. here's david wright. >> reporter: as he starts a swing through the must-win state of florida, donald trump is trying to look forward. but his campaign manager acknowledged it won't be easy t close the gap.

saying he'll accept a clinton victory at legitimate. and trump outlined his vision for the first 100 days of trump america. >> it's a contract between donald j. trump and the american voter. >> all of these liars will be sued after the election is over. >> letting up. >> we can go to gettysburg and sue women who made accusations against him. i'm going to keep talking about what we want to do. >> reporter: new women coming forward, one claiming trump kissed him a decade ago. abc news unable to confirm his story. >> it's become very clear that

[ laughter ] >> reporter: "snl" mocked trump's claim the election is rigged. >> all of the newscasters are making me look so bad. >> and how are we doing that. >> by taking all of the things i say and do, and putting them on tv. [ laughter ] >> reporter: democratic vice president nominee tim kaine is calling trump a sore trump has an aggressive campaign schedule. tom? >> 16 days to go. thank you. hillary clinton making her big move, focusing not just on battleground states. also now trying to return red states blue. mary bruce on the campaign trail. >> reporter: in north carolina today, hillary clinton taking her closing argument to church. >> anger is not a plan. >> reporter: with the momentum

ahead. >> we got to actually start interacting again with people we don't agree with. i do that all the time. [ laughter ] >> reporter: as she cris-crosses the battleground states, clinton is hammering home her point. >> that may be clear who donald trump is, but this election is about who we are and what w believe and what we stand up for. >> reporter: and she's also reaching out directly to trump supporters, as she faces the possibility of trying to unite a bitterly divided country. >> i understand they need a president who cares about them, will listen to them. and i want to be their president, too. [ cheers and applause ] >> reporter: clinton says she's

instead, she's focused on the battle for congress, lending her support to democratic candidates. today, weighing in on the north carolina senate race. >> unlike her important, debra has never been afraid to stand up to donald trump. >> reporter: clinton using candidates' ties to trump in the downballot races. some thinking trump's controversies could help democrats take back the house. now let's get right to jonathan karl. the headline of the poll, showing a bigger clinton lead. but there are other troubling numbers for trump. >> reporter: more than anything, what is driving that is women voters. hillary with a 20-point lead among women.

even among men, she's winning 44 p 44% to 41%. >> and trump showing his greatest strength? >> reporter: he's losing dramatically among nonwhite voters. hillary has a 58% lead among not whites. but look at his support among whites. he only has a lead within the margin of among whites. >> a significant gap, and time is running out. jon, thank you. and download the abc news app for live streaming breaking news reports from the campaign trail. let's turn to a massive manhunt under way in california. starts with a traffic stop that erupted in gunfire. you hear the shots there. a police officer bringing a

as he tried to pull over a car, the shootout starting. ron claiborne with the video. >> reporter: 4:30 a.m., the police officer with a civilian guest in his police car tries to pull over this silver mazda. but then it takes off. >> going to be in a pursuit. failure to yield. >> reporter: the officer turns on his siren in pull pursuit. then a volley of shots from the passenger side. more shots fired, disabling the police car. it rolls to a stop. these photos taken later show the car's shattered window.

hitting the officer and the civilian. neither were seriously hurt, but the suspects got away. and tonight, they're still on the run. >> ron, thank you. overseas tonight, and the battle for mosul. intense fighting under way. fig martha raddatz in the region tonight. >> reporter: the resistance has a suspected isis suicide vehicle advancing, and forces opening fire. after one narrow miss, then another, finally, the car is struck. catching fire. the gunfire also intense

kirkuk. there are about 5,000 americans on the ground in iraq, like the soldiers behind me. most are staying inside the wire, on bases. but there are about 500 out in the thick of it. defense secretary ash carter telling us in northern iraq, it's a dangerous but vital mission. >> whether they're flying on the ground, they're at risk. it's also important that everybody understands we must do this. we have to protect ourselves. >> reporter: tonight, more than 1 million civilians remain under isis control in mosul. that's why the next phase of this operation is so difficdifficult.

now to the big chill moving across the country after a week of record heat. many temperatures and windchills dropping to below freezing. plus, snow and strong winds blowing across lake placid, new york. rob marciano? >> temperatures in the morng below freezing. those are the windchills. and a bit of a warming trend after that. looks like above average temperatures into the beginning of next week. several storms coming into the west, going to have some wind with it. and one or two more storms mid and late week, into washington and southern california. a busy week ahead for the west. now to the megabusiness deal

at&t agreeing to buy timewarner for $85.4 billion. the sale will require the approval of government regulators. and the chicago cubs celebrating their first national league pennant in 74 years. now, playing the world series against the cleveland indians. here's alex perez. >> reporter: tonight, the lovable losers are finally w winners. tears in the stands. >> it's hard to believe. i'm in shock right now. it's my first time here, it went the cubs' way. >> reporter: the cubs winning

>> the city has let us know, they're hungry for a moment like this. we're so excited to be a part of the team that gives them an opportunity to see a chicago cubs team in the world series. >> reporter: eddie vedder, just one of the fans caught up in cubby fever. 71 years ago, a loaf of bread cost 9 cents. it was there, that billy cast a curse on the team, and the curse of the billy goat was born. a curse these fans believe is finally broken. >> it's amazing. it's been a lifetime in the making. >> reporter: all day, fans have been lining up to take a picture in front of the marquee here. the cubs last won the world series in 1908. taking on the cleveland indians, whose last win was 1948.

board. tom? >> alex, thank you. still ahead on "world news tonight" this sunday, the intensifying search for a missing hiker. and the new worry for rescue teams tonight. plus, the bonus pay about-face, whith american servicemen and women and their families. and the boat capsizing in the gulf of mexico. what m difference here. stay with us. go, go! [ rock music playing ] have fun with your replaced windows. run away! [ grunts ] leave him! leave him! [ music continues ] brick and mortar, what?! [ music continues ] [ tires screech ] [ laughs ] [ doorbell rings ] when you bundle home and auto insurance with progressive, you get more than a big discount. that's what you get for bundling home and auto!

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these were promises they've made. >> it's causing a lot of stress. >> reporter: during the height of the wars in iraq and afghanistan, the national guard offered bonuses. but now the military wants that money back from thousands of soldiers. the bonuses were supposed to go to soldiers with skills in high demand. but the pentagonai never should have gotten the extra cash. $22 million already recouped. >> month after month, paying about $1,300. >> reporter: this soldier, forced to refinance his home to repay $46,000 in bonuses.

>> i felt totally betrayed by my commanders. >> reporter: the pentagon waived his repayment, but he's not croc dropping the case. >> are any of the soldiers getting to keep their bonuses? >> they've waived a lot of them, but thousands still having repay. still ahead, the race to find a 21-year-old hiker. plus, the problem with yoga pants. what one man said, sending women

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the concerns tonight, changing weather conditions. and a terrifying boat trip off the coast of florida. 12 miles out, they're clinging to the hull of their capsized vessel. they were rescued at dawn, thankfully, nobody was hurt. officials say their life jackets may have saved them. > wearing yoga pants, then women protesting. the man saying it was a joke. clearly not a joke for some. coming up, a story you don't want to miss. the incredible power of dogs. how one is changing a little

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finally tonight, a kid and a tornado may sound like trouble. but not this time. here's john donvan. >> reporter: here it is. the moment that kai the boy me meets tornado the dog. >> kai was diagnosed with autism. >> reporter: he showed a knack for a different kind of communication. >> we would go to the p playground, and he would seek out interactions with dogs as opposed with people. >> reporter: enter tornado, trained from birth to be a service dog specializing in autism, trained to help him feel

so, about that moment when the two of them met. here's why mom cried. >> seeing him immediately, when he laid down, and the relationship reciprocated back to him, it was breathtaking. he seems so much more content. he seems more fulfilled. >> reporter: a team, boy and dog, inseparable. john donvan, abc news tornado for being "america str strong". i'm tom llamas.

>> now, on wisn 12 news. adrienne: a hit and run driver hit three women in an uber rental in downtown milwaukee. now police are searching for the people responsible. police say the women wbe they were hit by another vehicle. sheldon: police responded to the scene near 2nd and clybourn early this morning. that's where wisn 12 news' terry sater joins us live tonight. terry? terry: there are a lot of unanswered questions tonight. the hit and run crash happened shortly before 3:00 this morning right here at 2nd and west clybourn in downtown milwaukee. police say the three women who died were riding in an uber car a ford fusion heading westbound when the driver of a lexus crossover ran a red light. he slammed into the uber car. two female passengers from illinois in their 30's died here