getting caught in a tree. nearly crashing into homes. nervous neighbors springing into action. >> dude, seriously, let's go. >> racining to pulthe balloon to a safe landing. the dramatic rescue caught on camera. > get rea. >> okay. for what? >> the most anticipated movie i years. hollywood on lockdown for the huge premier. oscars. >> all right, let's light it up. >> fanline up for more than a week to get the first look. >> you might need this. >> the force about to awaken live this morning on "gma." we do say good morning, america. the force is with us. the big "star wars" world premier tonight. we're celebrating this morning with onef the stars. rolling out the red carpet. a lot more on that ahead this morning. >> look at bb8 coming.

popular. what a weekend in the east.. ceral park packed. there it is. people running in shorts. take a look at this, as well. mountain creek ski resort in new jersey. that's last year. here iwas on sunday. nothing. nothing at all. we all know about green bay. coldest place in the world to play football. not yesterday. they don't wear shirts even when it's cold. >> even when it's the frozen tundra. >> those cheeseheads are serious. no doubt. >> ginger will have more. let's go to kendis gibson, he's in lufkin, texas. powerfultorms there. kendis. >> reporter: george, powerful being the key word. this gives you a sense of how powerful the storms were. this, right here, 1 of 64 freight train cars tossed around. looking like toys. look over there. across the highway, there goes another one. all across the highway over the weekend. today, a massive cleanup effort

parts of texas. >> that's a tornado. >> reporter: and it was. a weekend of wicked weather terrifying texas. >> a white wall of stuff flying everywhere. >> reporter: three tornaes touching down. you can see from the air the path of deruction. >> tornado just hit my neighborhood. >> reporter: that home completely obliterated. the homes to the left and right, missing the twister. at least 50 houses suffering damage. the mayor of lindale declaring a state of disaster. >> i'm thankful we weren't home. i think the lord sent us away and he spared us. >> reporter: this morning, as people a are left eaning up, the red cross on the scene to help. and here in lufkin, that tossed d frght train. >> we had realally heavyinds. >> reporter: winds picking up and flinging 64 cars on their sides. overnight crews working to pick up the pieces. and to the north, kansas looking a lot like a frozen tundra. blizzard-like conditions sent

bogged down. in the heavy snowfall. crews struggling to keep u up. texas d.o.t. officials cleared the highway just in time for the morning rush hour. but with 62 more of these cars to go, it will be days before they're all upright. robin? >> quite a scene. kekendis, thk you. the weather a headline here for a different reason. record heat in the east. temperatures hitti the 70s in some areas on sunday, including the new yoyork area. the bibig headli, it's going to be warm on christmas. let's head outside to ginger. >> this mild and warm pattern is going nowhere. just the fact that i can stand here in a dress in mid-december and not be chilled at all, you know something's up. let's look up at lake superior. you can see last year, the snow and the ice covering it. now, ice-free. it looks almost tropical. that's just it. we've been allowed this kind of tropical warm air coming up.

weekend. t.j. -- texas up to the great lakes. cleveland hit 70. new york city central park, 67. the jet stream, althrough next week. we put it in the position around christmas. blocking the polar air. it won't block santa. it will be much above average. we're talking 10 to 20 degrees by the time we reach mid and end of next week. george? >> wow, that is something. the race for president now. the big shakeup as gop candidates get set to face off tomorrow night. ted cruz is surging in the polls. tang the lead over donald trump in iowa, closing in on donald trump nationally. tom llamas here with more. >> reporter: good morning, george. one of the iowa polls shows senator cruz with ten-point lead. trump, who usually loves the polls when he's winning, calling that poll biased towards him. he's still the front-runner nationally, as you can see. on the eve of the debate, the big story is ted cruz. this morning, a shakeup in the gop race for president.

senator ted cruz now the man to beat in iowa. donald trump not happy about it. >> you look at how he has dealt with the senate. goes in there a little bit like a maniac. >> reporter: cruz reacting on social media. posting a video of the famous maniac dance scene. fromhe movie "flash dance" tweeting in honor of my friend donald trump. she's a maniac maniac at your love >> reporter: but trump not laughing after the audio of cruz speaking behind closed doors with donors surfaced, questioning if trump was fit to be commander in chief. >> that's a question of strength. but it's also a question of judgnt. >> reporter: trump striking back. twting i was disappointed that ted cruz would speak behind my back, get caught. and then deny it. well welcome tthe wonderful world of politics. cruz goes into the debate with a target on his back.

spending. by more than barack obama proposes we cut it. >> reporter: over the weekend, "snl" tang a look at the gop race with blast from the past. >> rubio and cruz, sounds like a miami law firm. if you've been injured on the job, call rubio and cruz. >> reporter: will ferrell reprising his role as george w. bush. joking he is entering the race. and knows exactly what republican voters want in their next president. >> they want someone who is cuckoo for cocoauffs. cruz's momentum has been growing where he took on theedia and themoderators. tomorrow we're going to see if he takes on trump. >> we are. let's talk to jon karl. cruz really firming up his support. >> yeah, the story of both of these new iowa polls is ted

is ted cruz. he's surging. jumping more than 20 points since october in that "des moines register" poll. while trump'numbers have essentially remaed the s same. if you look deeper into the polls, you see cruz has more potential to keep rising. fox news poll, 30% say they would never vote for donald trump. only 6% % say theyould never vote for ted cruz. one other point about iowa. the most unpopular republican in iowa right now is, by far, jeb bush. >> if youdd up the first and second choice, ted cruz is above 50%. the last one before the christmas/new year's freeze. it is crucial. >> once again. donald trump will be at center stage. george, five debates. all five, dona trump has been in the mide because he still has a commanding lead in the national polls. for the first time, ted cruz will be standing nexext to him because he has surpassed marco rubio in the polls. i'll be looking for how both trump and marco rubio go at ted

he's now in competition to be the alternative to donald trump. >> and chris christie back on the big stage as well. abc news sponsoring the next democratic debate this saturday. >> and national security is sure to be a hot topic. president obobama headto the pentag this morning for a meeting on the campaign against isisis. as we learn major government lapses opened the door for one of those san bernardino killers to enter the country. brian ss is here with that. >> reporter: good morning, robin. officials in the u.s. and europe deal witwarnings about possible isis attacks to disrupt thchristmas holidays. new questions this morning about whether the pakistani woman involved in the san bernardino shooting rampage should ve been allowed to come here in the first place. in london, they say they have credible intelligence reports that isis leaders want a

christmas. in geneva over the weekend, two men were arrested for the manufacture or transport of explosive or toxic gases as a search continued for four others. in california th morning, the fbi is not saying what, if anything, it found in its now completed search of this lake. still investigating if more attacks could be coming in the u.s. and now, abc news has learned that a secret u.s. policy prevented immigration investigators last year from looking for tashfeen malik's tensive social media messages that the fbi says included talk of jihad and martyrdom. >> during that time period, immigration officials were not allowed to view social media as part of the screening press. >> reporter: john cohen, now an abc news consultant, says

homeland officia for new policies last year. to allow them to look at the social media's post but they were opposed by the depament's office of civil rights and civil liberes. >> the prima concern was that it would b be viewedegatively if disclosed publicly. and there were concerns it would be embarrassing. >> reporter: malik received her fiance visa last year in just three weeks, with no check done for whether she had any online messes. in support o of terrorm. >> had they checked her out more, maybe she wouldn't have gotten a visa. maybe those people in san bernardino would be alive. >> reporr: in a statement to abc news this mornining, the department of homeland security says it has started three pilot programs to search the social dia of visa applicants. insiders say it's still not a widespread policy. and a major impediment. >> a lot of people are scratching their heads. why sit taking this long? >> not widespread yet.

this morning. sheriff's deputies opened fire on an armed man. keptpt firing once he was on the ground. e victim's family is raising questions. police say video shows he was still holding his gun. ryan ons has the story. [ gunfire ] >> reporter: two los angeles county sheriff's deputies unleashing hail of gunfire. 33 rounds in all. their target this man. we will not show you the rest of the video. cops keep firing even after he had fallen to the ground and is crawling away. >> 911, what is your emergency? >> there's a black male walking down the street shooting a gun inhe air. >> reporter: this is 28-year-old nicholas robinson earlier. armemed with aun. walkg erratically in the street. authorities say he's already fired a half dozen shots in the air in the middle of a neighborhood. >> we don't know. >> how many times did he s shoot into the air? >> at least six, seven times in the air.

down the gun. he refused. when he walked away from them and toward this crowded gas station, deputies say, they fired. >> t people, two women and three children in a car at a gas pump within five feet of him at the time. >> if he goes into the gas station n and takehostages or shoots somebody, we'll have a different topic to talk about. like why didn't the police officers do something? >> reporter: robertson's family questioning whether he had to die. some members of the community coming out to protest. >> they shot him in the shoulder. he was crawling to this gas station. they could have tasered him. >> reporter: in response on sunday, the sheriff's department releasing this freeze-frame from a nearby camera. apparently showing that even when he was on the pavement, even after initially shot, that gun never leaves his hands. investigators think this all

fight with his wife. this morning, he's survived by that wife and three young children. george? >> okay, ryan. thank you. let's go to amy for today's other top stories. starting with a new fbi investigation. in southern california. attacks on two mosques south of los angeles are under inveigation as hate crimes. vandals defaced the mosques with spray paint and left a fake hand grenade outside one of them. this comes just days after a mosque in palm springs was damaged in a fire which my say was deliberately set by a man now in custody. police outside paris said a a kindergarten teacher this morning. before yelling support for isis. the teacher is okay. classroom the time. the suspect, wearing a mask and d gles, fled the scene on foot. there are new details in the october crash of the russian plane that killed 224 people over egypt's sinai peninsula. russia b and western governments say a bomb brought it down.

terrorism so far. their investigation continues. a southwest airlines flight had to make an emergency landing in san antononio becau part of the wing that reduces drag appeared to be at an odd angle. one passenger said people were screaming in panic. the plane was able to laland safely. the post office will be swamped today. it is the busiest day of the year. 640 million cards, letters, packages expected to be mailed. that will only add to the woes of one perturbed postman. in cape cod. look at that. under siege by gobblers. they've been on his tail every day. they've become so belligerent. he's forced to fend them off with a ten-foot pole. that he brings with him. you couldn't hear him in the video. he just looks and goes, every day. >> can you imagine? every day facing that. >> he just keeps leading them home, he's got dinner for a week. just lead them home. that's a no-brainer. >> that's one way of looking at

thank you. thank you, amy. it is the biggest movie event of the year. who knows, maybe eve the "star wars" world premier is in los angeles tonight. the blockbuster opening for the rest of us at the end of the week. nick watt is in the center of the galaxy in hollywood. good morning, nick. >> reporter: good morning, robin. there are already "star wars" diehard fans camped out outside the chinestheater, hoping to snag the best seats for opening night, which isn't until thursday. before then, the premier that starts in 14 hours and about 15 minutes. >> get ready.. >>kay. for what? >> reporter: for thehe stars aligning at tonight's premier, security is tighter than the oscars. four blocks of hollywood boulevard closed since last thursday. >> happy "star wars." >> reporter: it's nine days already these fans have been in line.

australia are serious. getting married in the line. on thursday. who's officiatg? >> we have a good friend who is a celebrant and is named obi sean. >> reporter: "the force awakens" will debut on over 4,000 screens this week. back in '77, "star wars" opened on 32. this one included. an instant hit, darth vader was soon leaving his footprints here outside the theater. >> george lucas watched the first one from here. are you kidding me? this is the place to be. >> feels great! >> reporter: in 1999, for "t phantom menace" the line was born. >> i met my husband in line. >> reporter: and this is the result? >> this is the result. >> reporter: nate's been in line over a week already. >> when that comes up onhe screen, a little kid inside me is saying, is this really happening. >> there's a center of the

that's right here. >> reporter: these nerds, their word, not mine, are making money for a children's charity. it's a sponsored wait on the sidewalk. it rained overnight. it's chilly by l.a. standards. they have another 80 hours to go. i'm not sure i can take it. can you guys? >> nerd is a high compliment for them. >> we're going to a special screening tomorrow in new york. we can't even give details. it's so top secret. >> no phones. they take them when you walk in the door. this is l lockdown. >> can't blame them for that. >> we're given instructions. >> not going to say anything on wednesday. >> no, we can't. another big storm in the west. this one hits san francisco? >> nick was just alluding to it. this is san pabl california. trs into homes. a look at where that storm is now. smothering anywhere from arizona up through the dakotas with winter weather advisories and warnings.

you by walmart. the nfl facing a billion-dollar lawsuit. and now a big new hollywood movie over t the dange of concussions. so why was roger goodell laughing at a joke about them. a lot of people speak out this morning. and hoverboards catching fire. major retailers pulling some brands. we have the headad of one the biggest manufacturers standing by to and your questions. are they safe to put under your tree this christmas?questions. are they safe to put under y your tree this christmas?re quite the expert at waking people up in the morning. let me show you how grandma does it. your daddy made this when heas a little boy. this is your dad at my house, where he had his first christmas. thanks for making the coffee. well look who's up. i'm really glad you're here mom. me too.

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oh. you're looking live righnow, our nation's capital. oh, those cherry blossoms still going strong. and on lake erie. water-iing. yeah, in december. temperatures there in the 60s on sunday. and it will be warm as ginger told us in the east. right through the christmas day. >> you did need the wet suit. the water was in the 40s. very cold. >> my forsythia is bloomin outside. it's usually the first sign of spring. it's already here, guys. >> i didn't know what that was. >> what did you call it? >> the bright yellow flower. yeah.

got it. president obama planning to visit the pentagon this morning for a meeting with the national security council. on the fight against isis. sleep, yes, you can get too much. researchers find that more than nine hours a day may shorten your life. >> we would like to know that problem. we don't. jesse is here. he'll have a heartwarming story of a dog wearing a purple heart here. >> two heroes overseas. it great. >> looking forwardo that. we begin with nfl commissioner roger goodell. he's u under firgetting caught on camera laughihing about concussions at a black tie dinner at the same time the league is dealing with a $1 billion settlement over concussions. >> just last night, another player suffered a concussion. you see it right here. his secondnd of the ason. at a time when concussion dangers s are at t forefront,

settlement filed by the players. e league seemingly making light of the situation is not sitting well. with some most affected by it. awkward is the word being used to describe this moment. >> i had a chance to sit next to the commissioner of football. pete roselle tonight also, and -- oh, excuse me. roger goodell. i apologize. i had six concussions in the nfl, so -- >> reporter: hall of fame nfl quarterback roger staubach saying that he had run the joke by t the commiioner in advance. >> he approved it. >> reporter: and goodell laughed again. this morning, some are saying concussions shouldn't be a laughing matter. there's currently a lawsuit hanging over the nfl's head.

concussion cases. bernard robertson is 1 of the more than 4500 nfl players suing the league. he fails to see the humor. >> concussions a aren't a ughing matter. specifically the effects from those concussions. >> reporter: and the controversy over the league's history of dealing with the dangers is heading to the big screen christmas day with the new movie, "concussion." >> repetitive head trauma chokes the brain. >> this is inappropriate at any time. especially now. our interest and concerns are heightened by this issue. and the nfl commissioner is laughing? >> reporter: goodell says the nfl is doing all it can to make the game safer. >> you know, we have done 39 rule changes over the last ten years to make our game safer. >> reporter: just this year alone, reportedly more than 150 concussions. in november, rams quarterback case keenum hit hard in the head. allowed back in the game.. goodell admits he didn't get proper attention. >> the problem we had was the appropriate medical attention

that. >> reporter: the nfl makes no admission of guilt under the settlement. to qualify for compensation. former pyers don't have to show their conditions relalated to nfl football. we reached out to the nfl about the concussion joke but did not hear back. >> thank you. you'll be talking to the doctor xt hour who inspired the movie. >> dr. bennet omalu. he's got a lot of headlines. also for the op-ed where he's says to parents, don't let your kids play football. we'll talk to him about that. now to the hot air balloon that came down in the middle of a san diego neighborhood. everyone on the ground racing to save it from crashing into homes. t.j. holmes is here with that story. good morning. >> reporter: you remember the gagame tug owar. imagine playing that against a 2.5-ton hot air balloon with lives and property a at stake. that's what a group of neighbors in cifornia had to do.

a hot air balloon carrying about a dozen ople nearly crashes into this rancho santa fe neighborhood. families scrambled to get ouout of their homes. >> this is quite a thing. >> reporter: and watch nervously. >> the balloon was going in the wrong direction. it was going to land on the intersection. cars were going back and forth. moments as it runs directly into a tree. flames tangling dangerously with the branches. it continues to fall. the pilot decides his only hope, the bystanders on the ground. and he lowers a rope. >> he's trying to land it in this street. >> reporter: the neighbors spring into action. >> dude, seriously, let's go. >> reporter: and pull the balloon to a safe landing. >> he's all right. whoo! >> reporter: and one last mome of fright gives way to jubilation. >> that's teamwork. >> reporter: rick johnson filmed the incident. >> instead of panicking, the

everybody jumped in like it was their job. everybody helped. paid attention to the pilot. everybody did their jobs. >> reporter: a celebratory picture at the end. this is not uncommon in the neighborhood. they have a history of hot air balloons. they c come down on the street or field but this one a little out of control. even said, not on my house. >> working together like that. helping each other out. all right, t.j., thank you. coming up, new warnings about hoverboards. after fires like this. the head of one of the major brands is here. the key to making yours is safe.

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give extra. get extra. got a new friend from fargo, north dakota, with us. back with a new crackdown on one of the most popular gifts of the holiday. all those recent problems of hoverboards catching fire. getting the attention of a lot of people.

the world. gio benitez has the story. >> reporter: hoverboards are burning up store shelves. in some cases, themselves. the governmentnt investiting ten fires across nine states. sending riders to the emergency room. >> for no apparent reason, it just exploded. >> reporter: now questions about whether the lithium ion batteries powering them are causing them to overheat. and if some manufacturers are using lower-quality batteries. from overseas to help cut costs of hoverboards sold right here in the u.s. >> be cautious about purchasing them on the internet. from overseas. >> reporter: in a new report overnight, u.s. custstoms and border protection says investigators have seized 164 hoverboards with fake batteries or other counterfeit marks. this morning another agency. the consumer product safety commission saying it is testing

what is causing the fire. >> holy w. >> reporter: reports sayt least two burning hoverboards were sold through vendors on amazon. now, the online retail giant says until it can be proven that they meet safety standards, they're pulling some brands. joining overstock.com, who just pulled all hoverboards. one of the affected companies, swagway they tell abc news they have not received any confirmed reports of any fire incident directly relad to a genuine swagway product. and that safety is always on the forefront. for "good morning america," gio benitez, abc news, new york. >> joing us is tony lee. the e founder d ceo of glitek, who hasn't had any problems with the product. thank you for being here and talking about it because you see the video.o. i was onon a flighfrom d.c. they made an announcement no hoverboards on board or checked baggage. people are considering t this for a gift.

>> we sold thousands of these and had zero issues. the reason is, a lotf companies are trying to make a quick buck. they're using the cheapest chinese batteries on the market today. the products we have are revolutionary. they're here to stay. we spent a huge amount of battery technology. >> it's the battery that is the problem. how do they catch fire? >> a cheap chinese battery doesn't have a board protector. there's a board that regulates power and acts as a circuit protector. it will never ovoverheat. if it does, it shuts down the battery. >> the battery is more expensive but how do you check? you don't want to rip it apart. how do you know what kind of battery is in it? >> deal with a reputable company. make sure it's branded samsung, lg, sony. if they don't say it, chances are it's a cheap battery.

for families? in some places like in new york city, we're not allowed to have them on the streets. what is your advice to parents? >> number one, deal with a reputable company. make sure that they're big and located in the u.s. numb two, buy a branded battery. sony, lg, sasamsung. number three, make sure that all the boards come with a one-year warranty. >> that gives you an idea that it comes from a reputable company. >> cheap batteries will not last past six months. >> thank you, tony. you cago to our website for more information on buying the proper hoverboards. let's go inside to grge. >> coming up, a touching story behind this hero dog rightere. why he's wearing a purple heart.

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today, 1 o jesse, i've been looking forward to this story all morning long. two military heroes. >> this is reallyl great story and some amazing photos as well. take a look at this picture. two soldiers. andrew brown and his military dog, rocky. rocky is recovering after he and specialist brown were injured in an explosion in afghanistan. there's rocky with a much-deserved purple heart attached to his collar.

shrapnel wounds in the explosion. since this picture was posted, it has more than 98,000 likes already. it's been shared nearly 130,000 times. rocky and specialist brown were reunited in a hospital in rmany. brown, now, back home. he's recovering. his dog, rocky, expected to be flying home soon to ft. hood. it is a tremendous story. a bond between these two. they're both doing okay. they're both going to be back home soon. >> i love how you referred to them as both soldiers. it's true. that's true. >> there's such a great bond. anybody that has a dog knows. between them and their dog. i can only imagine how much more heightened it is when you're in the military l like e thatogetr. >> and those military dogs are so smart as well. they've saved a lot of lives. >> to know thahat they'rdoing as well as they are, we just don't do enough stories and letting

>> he won a purple heart. >> how many people can even say that? >> incredible. we could get him here one day. that would be great. >> love to see him. thanks jesse. when we come bacack, a new headline about the so-called ihunch. the way you use your iphone may nonot only bbad for your posture, it could affect your mood, psychology. >> i totally believe that. my kids are grumpy after being hunched over their ipods. >> twitter can do that to you itself. we have a woworld exclive. taylor swift one on one about her massive world tour. the behind the scenes secrets. the special guests, from j.t., justin timberlake, to john legend, mick jagger. your all-access pass. only on "gma" this morning. coming up, "gma's" footbtball countdown brought to you by nationwide.all

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for 60 months plus 1,000 dollars holiday bonus cash on select vehicles. see your local ford dealer. back here on "gma." they've been measuring the snow in feet, not inches from the cascades to right there in the rockies. that's tamarac resort, idaho, 47 inches in the last ten days of fresh powder. they're loving it. shows the winter weather advisories. from new mexico up through colorado. and the dakotas. look how much snow will be left behind. some places, more than a foooot. l that weather brought to you

your local weather right after good morning, america. it's 8:00 a.m. major health alert. new fears hundreds of infants may have been exposed to tuberculosis. the race the find those at risk right now. you've got that james dean a world exclusive. taylor swift, one on one. >> getting ready for this, i wondered about aot of things. >> the fans, the tars, the amazing moments. the secrets behind her huge 1989 world tour. >> this was very collaborative and fun.

as apple music takes you behind one of the biggest tours ever. the countdown to christmas is on. just 11 days left. are you ready? we have the ultimate buyer's guide to saving big on the hottest gives at any budget. fiball all that, and the cast of "joy," spilling their secrets. jennifer lawrence, bradley we say -- >> all: good morning, america. come on, with enthusiasm, good morning, america! the newest droid in the "star wars" universe, bb8 is rolling, square this morning. we're counting down to "the force awakens." the big premier tonight in l.a. >> wt does he do when he looks at you like that. >> it's making me a little bit

>> a lot of people talking about the other big move you haveie concussion. >> dr. nnet omu will join us. do you have this? >> get that neck -- >> ihunch. new adlines about how the way we use our devices could be affecting our posture. our mood. dr. ashton will be here. let's go to amy with the morning rundown. the stig story, tackling terrorism. president obama making a rare visit to the pent phone today. he aims so reassure americans that the u.s. military is upping its game. but there are new questions abouwhether officials messed warnings that the san bernardino attacker tashfeen malik had jihadi sympathies before she came to the u.s.

searching her social media. that policy is being that policy is being reversed. donald trump is apparently losing his wide lead in the race for the white house. a new poll showing ted cruz closing the gap nationally. the poll finds trump and cruz would both lose to hillary clinton. the nbc/"wall street journal" poll finds the only republicans that could beat clinton r right now are marco rubio and dr. ben carson. the gop candidates debate again tomorrow night. in northern california, health officials are scrambling to track down hundreds of people including babies who may have been exposed to tuberculosis. >>eporter: this morning, fears that 1,000 people, including 350 infants, may have been exposed to tuberculosis. at a hospital in san jose. >> infants have an immature immune system. if this were to happen to any one baby, that is one too many. >> reporter: officials say one of their nurses who worked in

with having an active case of the disease last month and was placed on medical leave immediately. the hospital tracking down the hundreds of patients that could have been treated by the nurse. the hospil prescribing antibiotics just in case. the hospital posting a letter to the website. officials say in september, the results of the nurse's annual tb test came back negative. she was diagnonosed witht in november when she was being evaluated for an unrelated medical condition. >> the individual probably not able to spread it that well. simply because the individual didn't have symptoms at all. >> reporter: so far, no one else at the hospital has repoed signs of the illness.. for "good morning america" aditi roy, abc news, san jose, california. >> our thanks to aditi for that. a new warning about so-called helicopter parenting. it may be harming your teen's

a new survey finds overinvolved parents are preventing teens from taking ownership of their medical care. 40% of parents say thehey alone not their teens asked the questions during their last visit to the doctor. one-third of parents said their teen spoke privately to the doctor. a bad day at the dmv. in deerfield beach, florida. look at that. this customer kicking and punching a state trooper when he tried to escort her out for giving the clerks a hard time. not surprisingly, she's charged with resisting arrest. if you have been scolded for occasionally dropping a four-letter word. listen up. a surprising new study finds that people who pepper their language with salty saying tend to be more articulate than those who don't. people that curse have bigger vocabularies and express than people less likely to swear. reading that with a huge smile on your face the whole walk over. >> you noticed?

why is that? >> i have a good filter. not in front of the kids. but every now and then -- it feels good to just -- >> she lets it rip. >> apparently, i'm just a little more nuanced. >> there you havave it. you win. you win. >> let's get to jesse. here's what's coming up on the "gma morning menu." are you suffering from ihunch? how your phone might be ruining your posture and your mood. plus, we've got the doctor who helped expose the real dangers of concussions. and "gma" exclusive, taylor swift revealing secrets of her world tour. how she got mick jagger to join her on stage. it is getting real here at "gma." bb8 is here. we get ready for the "star wars" premier. i want to hug him. i i don't thk i'm allowed to touch him.

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the only rides you'll get taken on at carmax are the ones you take yourself. but just in case that absolutely 100 percent perfect choice... ...turns out to be... less than perfect... we give you five days to change your mind. sorry. welcome back to "gma." talking earlier about text neck and how all that smartphone use may be hurting your posture. but it also turns out it could be ruining your mood, too. there's new studies on that. it's a story we first saw in "the new york times." and dr. jennifer ashton has the details. >> reporter: we live in a tech-driven world. but is technology driving us to damage our bodies? our minds? steve august coining the term ihunch.

when we hunch over a smartphone. what happens when the weight of your header about 10 to 12 pounds is bent at a 60-degree angle over your r gadget? according to august, the stress on a person's neck increases to 60 pounds. that can cause pain. >> upper back and neck problems have proliferated in the last ten years. the big driver is the use of laptops, tablets, and smartphones. >> reporter: that's the physical part. now researchers are trying to find out if there's a link between the ihunch and mental health. amy cuddy is examining the issue in a "new york times" article. citing small, preliminary studies that suggest that slouchy posture may be linked to depression and low self-esteem. while none of these studies have shown conclusive evidence that staring at your smart phone affects your psychology, many professionals say sitting up straight is always a good idea. >> good posture affects everything from your confidence level, a assertivess level,

>> dr. jen ashton joins us now. this was the first story i read in yesterday's paper because you know this affects everybody. >> right now this is about the theoretical, thehe observaonal, and the association. let me explain. we know that the superman pose, we have heard about that, can inspire confidence. we know that somome peopleho are sad or depressed tend to hunch or slouch over. so now, it's really about, can we connect the dots? can we take texting, which typipically assume this is posture, and say it can contribute to sad or depressed mood. >> so what do you do about it? >> well, posture. chest up, shoulders back. head neutral. eyes forward. >> so hold it up a little bit. >> this might benefit more than just your posture here. if your posture can affect your mood, i'm all in. so this is what we're going to be -- >> if you get a bad e-mail, you're still in a bad mood. >> then you throw it backwards and it gives you an arching posture. >> thank you, jen. let's go over to robin. >> you b.

and jen. another major health concern, concussio. they're a huge problem in football from the peewees to the pros. the new movie with will smith shining light on the problem. we're going to talk live to the doctor who inspired it. dr. omalu. first, a look at his story. will smith's passionate performance in the new film, "concussion "concussion" earned him a golden globe nomination. >> tell the truth. tell the truthth. reporter: the man smith portrays in the film is dr. bennet omalu. a nigerian born forensic pathologist. >> i am the wrong person to have discovered this. >> reporter: his discovery, chronic traumatic encephalopathy. or ct serks a condition caused by repeated blows to the head. it is found mostly in athletes who play contact sports like football. >> hard shot on welker. >> reporter: the long-term effects can lead to dementia, memory loss, depression. even s suicide.

against the powerful nfl. >> you're going to war with a corporation that owns a day of the week. >> reporter:r: in n a rently published new york times op ed titled don't let kids play football, the doctor wrote, as a society, the question we have to answer is, when we knowingly and willfully allow a child to play high-impact contact sports, are we endangering the child? his research may be helping to change the ongoing conversation on concussions. >> i am not done! >> he is not done. he's here with us right now. dr. bennet omalu. it's so good to see you again. i watched the film last night. having spent time with you, will smith really got it right. in fact, as you know, he got golden globe nomination. he said i'm grgrateful tthe hfpa for recognizing dr. omalu's inspiring and heroic story. he said he's going to see you at the golden globes. >> thank you for having me.

individual. and he reminds m of my -- reaffirms my childhood faith and believe in the american perfectionism. he epitomizes that perfection. he took my story and the story of cte from the depths of the californiaentral valley to the peak of the mountain top of the american mountain and the american psyche. and for this, i am profoundly grgrateful. i wish him the best of luck and may peace be with him. >> oh, you're -- it's bringing so much attention to an issue that not only affects the nfl, peewee peewee, all contact sports. you made headlines not just for the movie, but for your op ed. where you really talk to parents and you said, kids should not be playing peewee football. not playing contact sports. what is your message to them? >> high-impact contact sports. my message is to remember we're

one joy, one hope, one love. knowing at we know now, as a society, we're evolving. as we evolve, we give up less intelligent wa. we did things in the past. because we're becomingg more intelligent. so knowingng what we know now, do we continue to expose our children to the risk of permn't permanent brain damagage? this is not anti-football, anti-spots. exposure to your head has an inherent risk of causing damage. like we have done e with smong, alcohol, sex, shouldn't we protect our children, the most vulnerable, the most precious gifts of our lives, and let them become adults? and now, if you become an adult and as a physician, i educate you. you make the decision to play,

your side to stand by your right as an american to do whatever you want to do. but not our children. >> i think you get a lot of attention when you say, as a parent, you don't let your child smoke, drink. you have a demonstration in the movie. >> this is what you call a bennet omalu model. >> a model. >> this is a simulation. the jar is the rigid skull. the pink balloon is the brain. your brain floats freely inside your skull. look what happens in your brain when you have an impact. the brain bounces around the skull. so, as a human, you take a padding. this paddle will simulate the helmet. anytime, no matter how thick it t . look at what happens. so with our without the helmet, your brain still bounces around your skull. so knowing what we know now, with or without a helmet. with or without concussions. repeated blows of your head as a risk of causing permanent brain damage. >> you know the nfl. they have taken issue with you

but they say that they have changed their r ways. i want to y what they responded. the game to enhance the health and safety of players at all levels of football. these including nearly 40 rule changes in the last decade. strict contusion protocols. better training. are they doing enough? is this enoughgh >> cte and post trtraumatic encephalopathy is not about concussion. con cushions do not cause cte. concussion is s a diseas cte is a disease. both are caused by a blow to t the ad. no matter how much you reduce concussions, you're still exposing yourself to repeated blows, your risk of developiping cte is still there. but, the movie is not about the nitty-gritty of the science. it's about the spirit of the american family that i so much believed in as a child.

be american. to seek the truth. to bece enlightened. >> and your name really means that. >> yes. >> if your native tongue, it memeans -- forwd and speak. >> and speak the truth. amerans. >> i think people watching this film will have a better understanding of your work and your psion. and that you're not anti-football. you're not anti-sports. you just want to provide the knledge. i was talking to jesse. one of my colleagues. he was i in the nfl, what, five years? you were not as aware. >> it was something as you talk about, we just didn't have the education at the time. you didn't understand, i think, the significance of how that could impact your life moving away from football. 5, 10, 15, 20 years down the road.

i saw the screener for this movie. it's extremely powerful. i'm curious to see how this affects parents, if they watch it, whether or not they'll allow their chdren to play. and how this impacts the popularity of the sport. it's a powerful film. >> jesse, thank you. dr. omalu, always a pleasure. >> thank you. >> to be in your presence. >> thank you. >> and will is coming this week. >> oh, is he? he's amazing. >> amy? all right, thank you, robin. get ready, taylor swift fans. we have a world exclusive you'll only see here on "gma." the singer just releasing the trailer for the 1989 world tour live concert film, which you'll be able to watch on apple music starting sunday. thisorng, we have something more for you. jesse? you have the details. >> that's right, amy. get set. we have your exclusive first look at a bebehindhecenes interview with taylor swift for apple music while they were filming the 1989 world tour live in sydney, australia. check it out. been waiting for you welcome to new york >> reporter: she's performed

shake it off shake it off shake it off >> reporter: even showing us how to shake it off in times square on "gma." >> getting ready for this, i wondered about a lot of things. >> reporter: and over 1.5 million fans have seen her latest tour. and if you haven't, now you can, too.o. >> i wonder what it would be like to perform for 70,000 people. >> reporter: taylor swift and apple music teaming up to show us the 1989 world tour live film. we never go out of style we never go out of style >> reporter: the seven-time grammy-award winner releasing an exclusive, all-access look inside her world. and now,wifties can watch the show on their big and small screens. >> what would happen if i invited the most amazing artists in the world? >> reporter: this sunday, apple music members can access all the show-stopping moments with

including appearancesly just lyby justin timberlake, keith urban. john legend. mick jagger. >> this was an indicator of which musicians love music so much to pop up on stage just for the love of it. it was collaborative, fun. hey, you want to come out? cool, we'll learn your song. i have so many memories looking back. i' never -- i'm just going to hold on to them for dear life. >> reporter: sft saying how she reached out to the rolling stones legend. >> i had no idea mick was going to be in town. i had a show the next day. i just tt mick. i said, hey are you in nashville? do you want to come out and sing? he writes back, oh, what will i wear? now we got bad blood, we used to be mad love >> reporter: and a taylor show wouldn't be complete without

gigi hadid, kendall jenner making appearance as well. >> it would be weird to not include my friends. these are the people who helped me get to this point where i cod make this album. we had some of the most amazing memories, just around the tour. my friends would fly out. it became a way for us all to get together when we're all really busy. we would be like, all right, meeting up i in londonhyde pk show. let's do this. >> you can see taylor's full interview on apple music's beats 1 radio station starting at noon eastern, 9:00 a.m. pacific today. and apple music members around the world, you can watch the 1989 world tour live movie exusively starting sunday at apple.com/taylor swift. >> is she 25 yet? >> she's 26. >> yesterdrday. she texted mick,e're all meeting up in london. it's okay. >> her birthday was yesterday. >> a year ago, she was here. a concert at "gma." >> we were just talking about that. >> here's the video. time flies. >> she shut down times square. >> incredible.

who was going to pop up on stage with her. she's just that kind of person. >> my daughters said it was e favorite moment of the summer. being there with taylor at that concert. she puts on a show. it's a group effort. > you knowho else puts on a show? ginger? she's outside. what do you got, ginger? >> i'll do my best t. swift out here. i have lancaster, south carolina. and these lovely ladies from where in maryland? >> elikette city. >> that's exactly what i was ing to say. and this morning, maybe you're traveling out of the east coast. there's s fog causg ground delays. laguardia, philadelphia, you're seeing that right there, check ahead. you might be delelayed a ltle bit. freezing rain, winter weweather advisories in northern maine. that's along that same warm front. and boy, does it feel warm. so mild out here. temperatures won't be this warm

we stay in >> we've got a little work to do to make it taylor swift ready. i think we could do a little ake it off. george, robin, let's get in to you. the ultimate guide to the holidays. how to score big with headphones on a budget. mark wahlberg here live to talk about his new movie with will ferrell.

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[ cheers and applause ] welcome ck. he's getting a lot of work out here. >> yes, he is. >> yes, yes, yes. the hottest new "star wars" character, bb8 is here. helping us countdown to the premier tonight in los angeles. is there he has a little burn mark from space. >> tough to run around like that. believe i had or not, "star wars" not the only movie. mark wahlberg is here in times uare. he stars with will ferrell in "daddy's home." so funny. >> you have seen the trailer.

talk to him in a little bit. >> inhe meantime, if you heard christmas is just around the corn. it doesn't feel like it. it's getting d down to the wire for holiday shopping. we're tracking the hottest gifts people a searching for in our ultimate christmas buyer's guide. becky worryley tells us about one of the top gift this is year. head phones. >> reporter: previkted to be the most popular tech gift given this season. to find the best, we turned to brian tong. tech editor at cnet. what do teens and 20 something's want? >> design and bass. a lot of kids love the deep booming sound. this the is bts solo2. you have the flashy colors and clean design. you can go big and large and just, you don't care what anybody thinks. these are the monster 24k. gold, bling bling, all gold everything.

model? >> the m50-xs. great, great headphones. >> reporter: on ear. over ear. which is better? >> how it feels. some people don't like the idea of an over-yea headphone. it cuts your ear off but it's the best sound. >> reporter: if you're buying head foens for someone who is a commuter? it's all about noisecanceling. >> it send res verse frequency in here. it deadens thehe sou around you. it creates a chamber inside. it's like your own, isolated room. >> reporter: let's talk xaeper ear buds. >> some are aroun the $120, $150. that's a lot. the $40 to $50 speet spot, you'll get everything you need.

those picks on our website, goodmorngamerica.com on yahoo!. becky is with us. a lot of them are expense pich what are you getting for a $300 pair versus a $100 pair. >> that is tult mat question. people who are into sound they can hear a difference. me, i'm not so sure. this is about brand, design, fashion. there are mirrors in the headphone aisles in the electronics store. ho do i look? >> they look festiv my daughters just want them to be pink. thank you, becky. i'm here with mark wahlberg. he's teaming up with will ferrell in the new comedy, daddy's home. a dad and a step dad square off for the love of their family. >> hey, kids.

weave to with safe here. >> half pipe? >> that's cory from red bull. >> you have a sponsor for my backyard? >> and mark wahlberg joins us. the whole family watched this last night. had a lot of fun. dusty is the ultimate cool dad. >> yes, aside from his inability to be responsible and commit >> but he comes back and throws the whole family into an uproar. it must have been so much fun to team up with will again. >> he's such a great guy. onef the rare comedy guys. his humor comes from a nice place. he's a nice and happy guy. he enjoys making people laugh. >> it taps into something. this i a dynamic happening in a lot of families. grows out of something real. though it's pretty outrageous. >> yeah, usually the step dad is the bad guy. the evil one. and, you know, he's a genuinely li sweet guy who wants to be accept bdty kids. i just can't take the fact that

and soy come back to reclaim my family and craziness ensues. >> skrou havee fou kids now, right? >> i've got four. >> did they weigh in? >> they suspect seen it yet. mom is the censor board. >> you did an stain gram of the christmas sweater, right? sal and billy wearing them. >> that's more inappropriate than the content of the movie. but yeah. my picture looks more like you. that one looks like dick clark right there. >> that is dick clark. not mark wahlberg. on a didn't note. you have said you oh s so much or of you success to your catholic faith. you had the chance this fall, when pope francis came in, to play a part. what was that like? >> it was amazing. i satn church. a priest was saying you can be at church, but not be involved.

they askede to host the pope. you can't say no. i don't do good at hosting. families from different continents. mispronouncing theirir names was an issue. it was a big job. amazing to see how many people he's got coming back to the church now. he's trying to change things. >> the spirit he unleashed was so great. >> i've been around aot of famous people pip have never seen so many people excited about one person. >> you have your wahlburgers going on. we're opening one here. you did somethihingpecial after the paris attacks. >> donating proeds to the red cross. paris is my favorite city in the world. i was forge gnat enough to work there. made a movie there. a bad movie. it was great experience. try to go there often. >> you did a great thing. "daddy's home" is great movie.

i heard my smile takes over the world. oh, yes, it does. very nice xhil. it's time now for "gma's" football countdown. i'm here with the holy cross high school knights from flushing squeens. yeah. you can get excited. and tonight's "monday night football" game on espn, new york gits are in miami to face the dolphins. mike green berg and mike golic on espn and espn's mike and mike gave us theirpicks. they say giants take the win. . i have to give you a winning forecast. in miami, it will be so nice. this forecast sponsored by nationwide.. the kickoff teerature, 78. light winds. pretty perfect. even a little warm, we may say. the action all starts tonight at 8 clp 15.

>> and now for another smile that lights up the world. >> you can also dab real it's a. just give them onef -- whoa, we're dabbing here on "gma." we're counting down to christmas with the best present two high school sweethearts could hope to have. a supersecret surprise right out of a fairytale. rachel smith has the story. >> reporter: every love story deserves a fairy god mother. and for high school sweethearts, their fairy godmother turned out to be abc family. and breakup star chelsea kane. >> that is the scent of christmas dinner ruined.

i helped the future groom trick s girlfriend. >> i was lured here under false pretenses. >> i was feeling a little nervous. >> oh, my god. i walked into one of the mos beautiful and amazing proposals that a girl can hope for. >> i love you. will you mar me, baby? >> oh, my god. >> she saw the ring. i finally relaxed and said, okay. >> he dropped down, i was like, waitit. my eyes and mind were not synchronized. >> reporter: the surprise was not just a diamond ring. [ cheers and applause ] >> welcome to the family. >> to share this experience with the people that mean the most to me, it brought it full circle. >> i was so flattered to have been included. i love love. >> reporter: just like every great love story. >> i could not be anymore excited. starting our own family and continuing to push forward and pursue our dreams. >> there's a happily ever after.

york. >> what a surprise that couple is never going forget. coming up, the star-studded cast of "joy." jejennifer lawrence, robert de niro, bradley cooper.

> the movie "joy" dodoesn't hi theaters until christmas day. it's already picked up two golden globe nominations. it reunites jennifer lawrence, bradley cooper, robert de niro with director david o. russell. "20/20" anchor elizabeth vargas sat down with them to talk about it. >> hi. what are you doing here? >> reporter: it's jennifer lawrence at the p of her game. loosy inspired by the real-life home shopping entrepreneur and inventor joy mangano. >> my name's joy, by the way. >> reporter: it chronicles the rise from struggling single mom to head of her own business dynasty. >> the world doesnsn't owe y a thing. >> reporter: lawrence reteams for the third time with bradley coop. robert de niro, and david o. russell, the director. along with an all-star cast, virginia madsen and edgar ramirez as her eccentric ex-husband. i just want to start with you david, what drew you to --

>> well -- what d drew you to this story? joy's story? >> i think the movie is about the emotn, joy, when you're a child, a grownup, facing compromises. another inspiration was to see the best divorced couple in america. true unconditional love goes beyond divorce. >> it's a beautiful thing. unconditional love means that that love will transform itself. so in a way, gives us, gives me hope that true love does really last forever. >> people have talked about the fact that so many of you who have worked together so many times now, have a special chemistry. >> we met her. she was 20 years old. on "silver linings playbook." before hunger games. she asked robert de niro what is it like to be recognized on the street? >> i asked cooper what it's like to be in the tabloids? i was like, the tabloids say you're dating j. lo, is that true? then dav called action.

>> reporter: it is no wonder that o. russell cast lawrence in his first film with a female lead. it's a dysfunctional family story. >> i think there's no such thing as a normal family. that's the great thing about david's story telling. david says he finds the extraordinary in the ordinary. and then just examines it and opens it up and peels back layer after layer after layer. it's exciting to work that way as an actor. >> reporter: and the on-screen chemistry between cooper and lawrence is palpable. do you have that chemistry? >> yeah, when i'm with you, i feel very safe. > safe? >> yeah. like i can -- i can turn my brain off as an actoand, yeah, i feel safe i guess is the word. >> david made us a bizarre form of siblings in a way. >> i think having to learn that dance routine. i was -- that was -- we didn't know each other. >> on "silver linings playbook"?

with somebody. i think that had a lot to do with it. >> i understand what bradley's saying. we have a troop feeling. a certain comfort and confidence with each other. and feeling of being safe. yes. and all those things that -- many directors -- the finest directors have done over the years. >> reporter: and that special art of david o. russell is translating into movie gold. the film snagged two golden globe nominations. you've been nominanated for golden globe for best actress. amy schumer one of your best friends, said, you're going down. [ laughter ] >> i hope i am. i want to see that sweet little -- up on that stage. i'm trying to organize us wearing the same exact thing. that's my dream. >> are you going to root for her or are you going to root for you? >> we're both rooting for her. >> reporter: for "good morning america," elizabeth vargas, abc news, new york. >> i cannot wait to see "joy." it opens on christmas day.

the we'r're back n w with a legendary name in broadcast journalism. linda ellerbee. after more than 40 years in the biz, the last 25 of them hosting nick news on nickelodeon, linda is retirg. they'll air the special, hello, must be going. 25 years of nick news with linda ellerbee tomorrow. this morning, she's here with us. what a pleasure. >> is so nice to be here with you. >> all these years. two generations of talking -- two generations have been with you. >> it is. really. we have some kids that were 10 when we started that now have 10-year-olds that are watching. we have kids that grew up watching us that worked on the show. until, you know, just recently until we produced the last show. >> we had many in our staff here that are so excited because they

what was the most challenging story in yoyour 25 years that you had to explain to children? >> oh, without queion, aids. it was -- when we started in '91, it was a huge, huge storyry. not that it t shouldn'be today. but, it was then. and, the problem with explaining aids was, you have to explain, you have to talk about sex. >> right. >> and in our age group of 9 to 14, ththere are ds in there who actually haven't had the sex talk fm their parents yet. so it was tricky. how do i talk about aids without talking about sex? well, you can't, really. >> you had to keep all these things in mind.. you know your audience. you always have been tt way. you chose to be there so many years. what will you miss most? >> the kids themselves. if there's one lesson i take away from 25 years ofisteng to kids it's that you're never too old to learn from young. >> never too old to learn from -- out of the mouths of babes. >> yeah.

they educated me. in fact, the last part of the show, this is our only hour show. this last one. is really sort of about a personal piece about what you taught me. what kids taught me. >> what they taught you? before that, back in the day, that's you -- >> that's me, at abc. >> at abc. you were part of the "gma." >> big hair. big shoulders. big glasses. and big uth. >> we do remember that part, too. what do you remember most about your time here with us? >> i h had a gre time here at abc. i worked on a wonderful show called "our world." a primetime show about recent american history. every week, i came to work and they would give me a box of magazines and books and movies from a particular year. i would think, okay, this week i'm living in 1961. this week, i've living in 1942. and, in fact, i would get so immersed in the time period of

myself in the year 1987 writing a check and dating it 1951. >> no. no you didn't. >> because tt's where i was spending the week in our world. >> so immersed in it. i know that you, and maybe it's not a joke, people say, what next? you say retirement, people say, what next. you say you want to be a shepherd? >> got tireded to explning to people that after 51 years of working, i was hoping that quitting work would mean, i could get up every day and think, what would linda like to do? apparently, i'm supposed to have a project. everybody says, what next? i finally began to say, i'm just going to go be a shepherd, as way of saying, for awhile, i'm going to do nothing. joyfully. and i'm very grateful. i need to say this. that i'm able to retire. because too many americans are not. and i'm very lucky -- i had a great time. in television. i'm leaving with my head still on my shoulders. at my own choosing of the time.

tact. >> i love that voice and, you are just well deserving of all tt. thank you. you paved the way in so many ways for -- >> you, too, ma'am. >> and we're fellow thrivers. i like to say that. not survivors. >> i traded th my breasts for my life in 1993. and i ve never once regretted the trade. >> i love when you do the voice like that. yes, what a great trade. i'm glad you did that. you're here wiwith us rit now. >> and you, too. >> linda ellerbee, everybody. [ cheers and applause ] >> bye, bye. >> hello, i must bgoing, 25 years. tomorr night on nickelodeon.

bravo. what a great show today. >> great to see linda ellerbee here. >> oh, adore her. will smith will be here tomorrow. >> will ferrell later in the week. have a great day, everybody.

have a great day, everybody.sabrina: elias: a quick check of traffic this morning... this is i-235 at m- l-k... [current conditions] sabrina: good morning i'm sabrina ahmed... watch on the current conditions... hey sam... sam/ weather adlib:

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these bright tv lights. yeah.