welcome to "world news tonight." we're following a mass casualty event on an american highway. the tour bus ramming into a semi truck. at least 13 killed, dozens hurt. the highway shut down for hours. investigators now on the scene. fight to the finish. donald trump, losing ground in acknowledging he's falling behind. all-out assault. the new offensive against isis, backed by u.s.-led air strikes. the fight to liberate the terror group's biggest stronghold in iraq. martha raddatz in the region tonight. dangerous ride. >> shots fired! >> a police officer taking a civilian on a ridealong when a

tonight, the manhunt under way, as we take you inside that cruiser. 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 deadly collision in southern california. a tour bus crashing into a big rig. at least 13 killed, dozens hurt. the bus crashing on interstate 10. in desert hot springs. the freeway shut down for hours. 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 massacre on a southern california highway.

it's tough for all of us. >> reporter: just before dawn, a tour bus slamming into the rear of a semi truck. emergency crews racing to the rescue. pulling over 30 injured out, some in critical condition. survivors telling police they believe all the passengers were asleep at the moment of impact. officials saying most of the 13 killed were sitting near the front of the bus. >> the bus was truck. >> reporter: 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. from witness accounts, it appears the big rig swallowed that bus. officials saying there were no signs the driver hit the brakes. the highway shut down for hours. as crews work to identify victims and clean up the crash scene. the bus driver among the dead.

with such a large number of injured and dead. i spoke with a couple of family members 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. and take a look at the numbers of our new abc news poll. clinton, 50%trump, 38%. a wider margin than other recent clinton establishing a solid lead. trump in a race against time, with election day a little more than two weeks away. 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 own campaign manager acknowledged it won't be easy to close the gap. >> we are behind. she has some advantages, $66 million in ad buys.

voters disapprove of him saying he may not accept a clinton victory as 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. >> reporter: but he's still mired in battle. threatening revenge on the women accusing him of sexual misconduct. >> all of these liars will be sued after the election is over. >> reporter: his oppt >> he 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: and new women coming forward. including jessica drake, an adult film star who claims trump kissed her a decade ago. abc news unable to confirm his

>> correct. [ 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 presidential nominee tim kaine is calling trump a sore loser, but that's obviously premature. fighting hard in the battleground states all week long. tom? >> 16 days to go. thank you. hillary clinton making her big move, focusing not just on battleground states. also now trying to turn red states blue. including longtime republican str strongholds. mary bruce on the campaign trail. >> reporter: in north carolina today, hillary clinton taking her closing argument to church. >> anger is not a plan.

ahead. >> we've 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 what she says is at stake in the election. >> my opponent thinks insulting about who we are and what we believe. >> 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 looking past her opponent.

hours. i don't even think about responding to him anymore. >> reporter: instead, she's focused on the battle for congress, lending her support to democratic candidates. and going after their republican opponents. today, weighing in on the north carolina senate race. >> unlike her opponent, debra has never been afraid to stand up to donald trump. >> reporter: clinton using republican candidates' ties to trump in the downballot races. some thinking trump's controversies could help democrats take back the house. tom? >> mary, thank you. 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. take a look at the numbers here, tom. hillary with a 20-point lead among women. that's a high water mark for her. 55% to 35%.

44% to 41%. if those numbers remain anything like that, you could be looking at not just a loss, but a blowout. >> and trump even losing ground where he has shown his greatest strength? >> reporter: he's losing dramatically among nonwhite voters. hillary has a 58% lead among nonwhites. but look at his support among whites. he only has ad keep in mind, mitt romney lost the election with an 18-point lead 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. it started with a traffic stop that erupted in gunfire.

>> a police officer bringing a civilian on a ridealong. as he tried to pull over a car, the shootout starting. ron claiborne with the video. >> reporter: 4:30 a.m., the madera, california, police officer with a civilian guest in his police car tries to pull over this silver mazda. at first it looks like the car is pulling to the curb, then it takes off. >> going to be in a pursuit. failure to yield. r on his siren in full pursuit. then -- >> he has a gun! >> shots fired. >> reporter: it turns right. then a volley of shots from the passenger side. >> shots fired! >> reporter: more shots fired, disabling the police car. it rolls to a stop. these photos taken later show the patrol car's shattered window. and how close the shots came to hitting the officer and the

neither the officer nor the civilian 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. a -- iraqi and kurdish fighters liberating a village today. martha raddatz in the region tonight. >> reporter: the resistance has been fierce. a suspected isis suicide vehicle today speeding towards a convoy of advancing forces. those forces opening fire. after one narrow miss, then another, finally, the car is struck. catching fire. the gunfire also intense saturday on the outskirts of kirkuk.

troops push towards mosul. 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. >> make no mistake, whether they're flying airplanes overhead, or advising on the ground, even behind the front lines, they're at risk. it's also important that everybody understands we must do this. we have to protect ourselves. >> reporter: u.s. troops we talked to, well aware of the risks. tonight, more than 1 million civilians remain under isis control in mosul. that's why the next phase of this operation is so difficult. trying to save the civilians while wiping out isis.

across the country after a week of record heat. many temperatures and windchills dropping to near freezing. the first snow falling in the northeast, about half a foot on the ground in vermont. take a look at that. plus, snow and strong winds blowing across lake placid, new york. rob marciano here with us now. that looks like winter. >> it does. the sun came out, melted a lot of that snow, but another shot of cold air and snow coming in tuesday and wednesday. >> temperatures in the morning on wednesday, feeling like at or below freezing. boston, new york, philly, d.c., even pittsburgh. 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. wind gusts over 50 miles an hour at times. and one or two more storms mid and late week, into washington and southern california. a busy week ahead for the west. >> rob, thanks so much. now to the megabusiness deal

at&t agreeing to buy timewarner for $85.4 billion. the move allowing the company to both produce and distribute content to millions of customers. the sale will require the approval of government regulators. now to the world series showdown decades in the making. the chicago cubs celebrating their first national league pennant in 71 years. team, extreme heartbreak waiting for another. here's alex perez. >> reporter: tonight, the lovable losers are finally winners. a champagne shower uncorked in the locker room. tears in the stands. >> it's hard to believe. i'm in shock right now. it's my first time here. and i love seeing the cubs win. >> reporter: the cubs winning the pennant in front of their

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: pearl jam frontman eddie vedder, just one of the fans caught up in cubby fever. the last time the cubs made it to the fall classic, 1925. a loaf of bread cost 9 cents. curse on the team. after he and his smelly pet goat were kicked out of the game. 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. they are taking on the cleveland indians, whose last win was in 1948.

tom? >> chicago native, alex perez celebrating with all the cubs fans there. 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, sparking outrage among american servicemen and women and theifa the gulf of mexico. what may have made all the difference here. stay with us. ying ] 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!

we're gonna live forever! 80% of women say a healthy lifestyle is a priority. but up to 90% fall short in getting key nutrients from food alone. let's do more. add one a day women's 50+ complete multivitamin. with vitamin d and calcium to help support bone health. one a day. thanks for doing this, dad. so i thought it might be time to talk about a financial strategy. you mean pay him back? so let's start talking about your long term goals.

kes sense of investing. back now with the financial mix-up causing so much frustration and fury for american soldiers and their families. here's eva pilgrim with the latest. >> reporter: thousands of soldiers fighting a new battle against the military they once proudly served. >> i had done everything they asked of me. these were promises they've

>> it's causing a lot of stress. >> it was a slap in the face. >> reporter: during the height of the wars in iraq and afghanistan, the national guard offered bonuses. >> if we could wave the magic want and make it go away, we would. but then we would be breaking the law. >> reporter: 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 pentagon says it paid out bonuses to guardsmen who never should have qualified for the extra cash. california going after 9,700 current and retired guardsmen. $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. >> you still have thousands of soldiers having to pay this money back.

commanders. >> reporter: after he filed a lawsuit, the pentagon waived his bonus repayment. but he's not dropping the case. >> are any of the soldiers getting to keep their bonuses? >> can >> they've waived a lot of them, but thousands still having to repay. >> and some having to pay more than $40,000. eva, thank you. coming up next, the family hoping for a miracle. the race to find a 21-year-old hiker. plus, one man's problem with yoga pants. sending women to the streets in

my friends think d this at my age is scary. i say not if you protect yourself. what is scary? pneumococcal pneumonia. it's a serious disease. my doctor said the risk is greater now that i'm over 50! yeah...ya-ha... vaccine can help protect you from pneumococcal pneumonia- an illness that can cause coughing, chest pain, difficulty breathing, and may even put you in the hospital. prevnar 13? is approved for adults 18 and older to help prevent infections from 13 strains of the bacteria that cause pneumococcal pneumonia. you should not receive prevnar 13? if you have had a severe allergic reaction to the vaccine or its ingredients. if you have a weakened immune system, you may have a lower response to the vaccine. the most common side effects were pain, redness,

headache, muscle pain, joint pain, less appetite, vomiting, fever, chills, and rash. get this one done! ask about prevnar 13? at your next visit to your doctor's office or pharmacy. we got a tempur-flex... and it's got the spring and bounce of a traditional mattress. you sink into it, but you can still move around. and now that i have a tempur-flex, i can finally get a good night's sleep. buy the most highly recommended bed in america for as low as $25 per month and a 90 night free trial. think your heartburn pill works fast? zantac works in as little as 30 minutes. nexium can take 24 hours. when heartburn strikes, take zantac for faster relief than nexium or your money back. take the zantac it challenge. what's going on here? i'm val, the orange money retirement squirrel from voya. we're putting away acorns. you know, to show the importance of saving for the future. so you're sort of like a spokes person? more of a spokes metaphor. get organized at voya.com.

o be stronger. pantene's pro-v formula makes my curls so strong... ...they can dry practically frizz free. because strong is beautiful. (ray) i'd like to see more of the old lady. i'd like to see her go back to her more you know social side. (vo) pro plan bright mind adult 7+ promotes alertness and mental sharpness in dogs 7 and older. . (ray) she wants to learn things. the difference has been incredible. (vo) purina pro plan bright mind. nutrition that performs. back now with our "index." and a frantic search for a

annie schmidt, a 21-year-old, last seen by herself. drones and dogs now being used to track her. the concerns tonight, changing weather conditions. and a terrifying boat trip off the coast of florida. four people stranded, 12 miles out, they're clinging to the hull of their capsized boat. they alerted the coast guard by cell phone. they were rescued at dawn, thankfully, nobody was hurt. officials say their life jackets may have saved them. wearing yoga pants. then hundreds protesting. after comments were posted in a local newspaper saying women under 20 should not wear yoga pants. the man saying it was a joke. clearly not a joke for some. coming up, a story you don't want to miss.

little boy's life forever. stay with us. ? ? ? ? minating... status updating... hello-yellow-belt kind of day. get 24/7 digestive support with align junior.

hey, it's the phillips' lady! there's a more enjoyable way to get your fiber. try these delicious phillips' fiber good gummies, a good source of fiber to help support regularity. mmmm. these are great. my work here is done. phillips'. the tasty side of fiber. therno or the freedom to choose what doctor you want to see. so if you're on medicare, consider an aarp medicare supplement insurance plan, insured by unitedhealthcare insurance company. like any standardized medicare supplement plan, you'll be able to stay with the doctor or specialist you trust... or look for someone new -- as long as they accept medicare patients. and you're not stuck in a network... because there aren't any. so why wait?

so why pause to take a pill? and when you're having fun why stop to find a bathroom? with cialis for daily use, you don't have to plan around either. it's the only daily tablet approved to treat erectile dysfunction so you can be ready anytime the moment is right. plus cialis treats the frustrating urinary symptoms of bph, like needing to go frequently, day or night. tell your doctor about all your medical conditions and medicines, and ask if your heart is healthy enough for sex. do not take cialis if you take nitrates for chest pain, as it may cause an unsafe drop in blood pressure. do not drink alcohol in excess. side effects may include headache, upset stomach, delayed backache or muscle ache. to avoid long-term injury, get medical help right away for an erection lasting more than four hours. if you have any sudden decrease or loss in hearing or vision, or any symptoms of an allergic reaction, stop taking cialis and get medical help right away. why pause the moment? ask your doctor about cialis for daily use.

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 meets tornado the dog. and yes, this is a big moment in the life of any kid this happens to. so, why in that moment does kai's mother cry? it starts with this fact about her all-american kid. >> kai was 4 when he was >> reporter: for kai, autism has meant a particular challenge when interacting with people. but he showed a knack for a different kind of communication. >> we would go to the playground, and he would seek out interactions with dogs as opposed to people. where he was having a little bit harder of a time. >> reporter: enter tornado, trained from birth to be a service dog specializing in

taught to guide him around danger. and to help him keep safe. to be loyal. 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 being reciprocated back to him, it was breathtaking. >> reporter: because now they're friends. and in kai, that shows. >> he seems so much more content. he seems more fulfilled. >> reporter: a team, boy and dog, inseparable. john donvan, abc news. strong." i'm tom llamas.

ribeiro: here's a sneak peek at tonight's "afv." we know you're gonna love it. ? [ screams ] [ clicking ] woman: bye. ] woman: oh! [ applause ] welcome to "america's funniest home videos." and now, here he is, the host of our show, alfonso ribeiro. [ cheers and applause ] pow! hey, hey, hey!