Another big crowd last night laying thehe groundwork. Iami airport, Passengers Evacuated from a plane after a suspicious passengererade it through security a a eveveryone on edge after that apparent bombi in egypt. David kerley starts us off at reagan airport. Reporter good morning, george. It was more than just one aircraft. At least 20 jetliners held because authorities apparently lost track of this suspicious bag and had to find it. On three, on three. Reporter passengers taken bysurprise asiami police boaoard their plane. Everybody out, everybody ouou from thefrfrt. Repororr just before tataoff the amemecaairlines jet evacuated. The front, lets go, quickly, quickly. Reporter police ordering everyone on the jet bound for barbos to put their hands on their head. One passenger taken into custody, who the fbi says got through security just before 5 00 p. M. With suspicious items inin his carryon bag. Do you have anything on you . Reporter the officer noted the gentltlan not making eye contact then started fiddling with t t bag and thats when they kind of jumped all over him. Put him in handcuffs and took him dow andnd ordered all of us to get off the plane as fast as we could. Get off the plane, get o ground. Reporter the tsa telling abc news the passenger is a dentist and it wasis dental equipment which triggered the alarm. Ateast 20 jets held, delayed or diverted while theearch for the bag was on. Cant even tell us if youre going to get where youre going to go. Reporter some 500 passengers affected until the bag and t passenger were actually founund. The man was released, george. Theres no word whether he actually got to barbados and whether or not he got his bag back or not. The question, how did he get place . Reporter yeahah, one source is telling us tsa screeners saw something suspicious i i the bag. G. W to go to sececdary checking and apparently the second officer didnt realize that, released t bag, leased the passenger. Innocently the man went to his plane. Tsa hnt given a specific reason why that second person didnt realize this was a suspicious bag that needed to be checked. Again, the man has been released now, okay, davi thanks very much. The race for president now and the candididates facing off in tonights big debate. Donald trump and ben carson will be cenenr stage again. Aa newollhows they arar neck and neck. Lastst night trump giving a preview of the attacks carson may facend trump will join us live in a moment but first abcs tom llamas is there in milwaukee for tonights showdown. Good morning, tom. Reporter robin, good morning to you. The debate takes place here at the milwaukee theater and youre right, trump spoke in front of a huge crowd last night putting the pressure on dr. Ben carson but this morning weve looked questioned about and s se are checki out. Overnit, donald trump unleashing on dr. Ben carson and life stor this the only election in history where you are better off if y stab somebody. Reporter trump and carson now neck and neck in the polls, the retired nrosurgeon forced violent youth. If you try and hit your mother over the head with a hammerer yourr poll numrs goo upup a lot o of wei things are happening. This is a stranangeelection, isnt it . Reporter carson standing by the stories he wrotebout in his autobiography and talks about on the campan trail like turning his life around as a young man after trying to stab a fellow teen. Carsons campaign pointing to an article in parade magazine in 1997 where his mother corroborates the storytelling the reporter, oh, that really happenednd after the wall street journal reported discrepancies in carsonon count of an incident a at yalal where h h saide was honored as the most honest student after a class hoax invololving a bogus test a fellow student who staged the hoax telling abc news, carson was not lyingng saying, quote, i think he got it close to rit. I do not rememember this level scrutiny for one president barack obama when he was ruvening, in fact, i remember just the opposite. Reporter but as other candidates say, this is allair game, carsoninding some support from senator marco rubio. I know everything i need to know aut ben carson. He came from a poor family with no advantages in life and worked hard and became one of the worlds most renowd neurosgeons. Thatsll i need to know. Reporter the debate is tonight. T. Itll be two hours and starts at 9 00 eastern. There ll bee eight gop candidates on the main stage. Governors christine and huckabee did not mamake it. So much focus going on with carsrs, uncncar how much policyy theyll be able to squeeee in. We will see. Lets talk to donald trump. Mr. Trump,p, thank you for joining us by phone today. Sounds like youre ready to tee off on ben carson tonight. No, not at all. Well see what happens. Itll be loose and flexiblele. I have no idea whats going too happen but it will be interesting. As weve seen in toms piece right there, some of parts of carson story are starting to check out. When i talked to him on sunday he said you jumped the gun on those stories and that calal into questionn whetheroure fit to be mmander in chief. If he repeats that tonight h h will yourespond . Well, ill just simply say and mean it to the bottom, you know, the case was made that he went after his mother with a hammer and he wanted to hit his mother over the head with a hammer, that he stabbed sobody, that he had hit lock. He smashed somebodys face with a lockck, wh a padlock and other thgs and i im saying hes trying to justify this because he wants to be telling the truth and hes trying to justify it and then he saides pathological. He has a pathological temper or something and he wrote that himself in the book and, you know, im trying to figure whats going on ovever here. You hit sebody in t face with a lock and go after your mother with a hammer, you do all of these things and youre trying to justify that, yes, you did t them and thats suppose to make you credible. We heard the word its a very stranange situation. Heard the word hammer several times in your answer. Want to ask you about an abc news poll. You and ben carson at the top of most polls rightow and both doing quiteteell with repububcan voters, high favorability but when it goes to the general election voters, h hes doing. Better than you. Hes got a 50 favorability. Youre only at 38 and 59 unfavorable for you. How do you explain that and anything you can do about it . Well, sure, you do a lot about it once you tart running and focusingg on that. Zogby came out with a poll where im at 30 to 12727 againsten and i beat hillary headtohead in numerous pollslsut thats aa different g gup of folks. Right nowm dealing with republicans. Youre also dealing with china in an oped in the wall street journal today you say its time to tellhe truth on china but criticsay the policies youre calling for will spark a trade war that will babackfire on the united states. How do you respond. Whats aradewar . Were losing 400 billion a yeaear with china in terms of imbalance. Theyre killing us and in every respect and their currency manipulators are beaeang us with their currency manipulation and her things soso when you say trade war theyve got a trade war against us. They biat us at every front. We have people literally that have no clu and if you look at what china is doing step by step by step, i mean, trade war, sure, you wont even have a trade war. China hasas taken so much money out ofhe united states, so many jobs, so much of our base that trade war, i dont think youll have one, frankly, becausus they can afford a trade wawa we saw last week unemployment down to 5 . Federal reserve almost certain to raise rates. Is that the right move . It is the right move but the unemployment is not 5 . The unemployment is probably close to 20 . If youook at all the people out there that want to get jobs that have given up youre talking about unemployment thats actually close to 20 . The world is not happy. You know, you talked about my big crowd at the arena last ninit. It wasas in illilinois, it t s unbelievable. Believe me,f rl unemplment was at 5 i wouldnt have had 10,000 people at that are last night. Who else is in the hot seat tonight . I think everybody. I mean, look, its a contest. Its a very interestingng set of characters. Everybody has a veryy dferent point of view and i think its going to be an interesting time tonight. I look forward to it. We do too. Thanks for joining us this morning . Thank you very much, george. Lets talk to matt dowd about this. How do you explain th, donald trump, ben carson holdingn strong at theop of the polls. S. Anythi can bng them down. I think what explains their strength their authenticity so who they are, they seem genuine and their stories and all that. In the end thats what could bring them down if it bears out stand forrant authentic the cracks would dg them down immediately. The other thing i think theyll have to prove tonight especially is that people can see them as commander in chief. There is a question about whether the voterss can see them as commander in chief. Will they get pressed foror details on their policy. Whatre you watching for. Subplots. Will jeb go after marco rubio in the course of this . Will donald trump and ben carson engage in the midst of this and i think ted cruz is in an interesting position because i dont think he has an opportunity to bash the refs so what will he do. Some talk of ted cruz and jeb bushdoubleteaming marco rubio. I think it would be a mistake by them to go after marcoco Rubi Marco Rubio is a young guy withh a great story. Ii thinkheyre better off letting the moderators doing the work instead of them doing it. Lets see what happens. Matthehew dowd,hanks for being here. Later ill head to washington for an exclusive interview with president obama. Well bring that to you friday right here on gma. Robin. An important new study on Blood Pressure that can save lives affecting at least 17 million americans. Abcs dr. Richard besser is here and these are dramatitic findings, rich. Really dramatic. The big question for people witit high Blood Pressure has aays been i i you treat it how low do u go . People at high risk for heart geez was 140 or0 for t that top number. What they wanted to see here is what happens if you bring that all the way down to 120. So the researchers did astudy, half t the peoplple went for the current target of 140, half at 120 and studied 9,000 people. All over 50, no diabetes and disease. They had to stop the study early because there was a 25 reductctn in bad outcomes like heart attack, stroke or deaths from Heart Disease in lowering it by 20 points, medication is what led to that reduction. Exactly. Side effects, you know, when you talk about medication, is the 20point difference worth the side effects. Get it down that low on average people had to be on three medications to get it to the 140 it was two medications and there wa a slight increase in er visits for a number of things for low Blood Pressure, for fainting though there was no difference in falls and kidney tradeoff there. Recommendations. There are7 Million People who may benefit from that. A lot of ople. Talk to you doctor to see if the benefits outweigh the risks but there are so many things people can do to bring down medication. So maintaining their weight. Regular physical activity. Sleep. Processed foods. Those things could take care of some o of t ts or make it easier to control. All of this is encocoaging, thanan you very much. Dr. Besser will be taking your morning. You can tweet him drrichardbesser. Snow, hail rain and its moving east a and ginger, so many are on the lookout for a blizzard. So many. Youve got to see the numbers. First, san francisco, california, picture of the thunderstorms that rolled through the bae. That is the Golden Gate Bridge getting struck by lightning. Yoyo move to nevada where it came as heavy snow and this same storm now digging into the west with Winter Weather advisories from nevada up to montana into colorado and utah. Look at thal blizzard warning and watch, northeast colorado, western kansas and nebraska, that means wind, plus snow. It doesnt necessarily mean you get tons and tons of snow but does mean really bad travel conditions and out front, potential for tornadoes, damaging wind and, of course, that large hail. Des moines to peoria backk to st. Louis. More on this coming up. Fofonow backo robin. Amy has the mornings other top stories beginning with big news, the university of missouri. Thats right. The School Football team there will resume practice after the schools president resigned amid growing racial tension and the chancellor says hwill step students and faculty had joined the fooall teams protest. The team threatened to boycott over how racial tensions were handled. So coming up at 7 30 we will tata to jonathan butlerer the gradtudentnt who stagedd Hunger Strike trigging the protest on campus. A setback for psident obamas immigration plan. His executive order would have protected 5 million undocumente immigrant children and parents of u. S. Citizens from deportation. But now an Appeals Court has sided with 26 states who say the president exceeded his authority. The white house is expected to appeal to the supreme court. And there are new details in the growing scandal involving russia and t the olympic games. This morningng r rsian president vladadir putin says dopinin accusations against russian athletes and claims that the russian government staged a coverup ar quote, unfounded. Putin says no evidence has been presend by the world antidoping agency. But the russian track a field federaion has been given until the end of this weeeek to respond to that report. Russian athletes could be suspended from next years summer olympics. Well, some dramatic video from alaska. Pro skier i macintosh, look at him there, heumbled 1600 feet downhill while filming a movie. He deployed an air bag safety device on the way down, thankfully and remarkably was un uninjured. Once he stopped, macintosh was heard saying, im ok. By the way, the movie is called paradise waits. Finally if you want to get a unusual suggestion. Tu the lights off when youre brushing your teeth. A neuroscientist in britain studied the issue and said bright bathroom lights could b waking up your body as it should be prepang to rest. You know, actually brush my teeth in the dark in the morning so im actually still asleep right now. D you kno that. Do you do squats when ushing your teeth . Thats gingers thing. And they really tire you out. Squats, check. Lights f. Thanks, amy. That dramatic pole chase seconds. S. Back at 7 17 with that wild ending to a police chase in oklahoma. An officer lucky to be alive after his cruiser wasas rammed headon by an suv. T. J. Holmes here with the story. Hey, t. J. Reporter good morning. He was under the protection of god. That is how a police chief scbes how hisfficer got out of the situation in which he came facetoface with a suspect in an suv. The officer pulls his gun. The suspect hits the gas. Races towards a police cruiser. A Police Body Camera captures the driver appearing to aim right for the officers karaming it before being s spped by two nshots. It all began when officers i tulsa, oklahoma, chased a woman for five miles. She was accused of stealing an suv. Eventually they corner her vehicle in a School Parking lot. Police officer matt stacy races ouout of his car in an attempt to lay downpikes to flatten her tires. Three seconds later it ces barreling toward him. Stacy gets off two sts. Stop, stop. Reporter his body camera shows h h tumbling to theround anan racacg back up. The suvareening to the other end of the parking lot. The officers run after the suspect who taunts them. Put your hands on top of your head. Do not move. Reporter eventually theyre able to susubdue her. Taser, taser. Felony charges. The tulsa police chief commending his o officers r the job they did. And shes taunting and yelling at the officers. Some profanities. They do believe drugs was involved here but the officer chececd intohehospital, g gotot checked out and hes out of there. But, again, that was at an elementary school, all right, and shots were fired. No students or teachers involved but an ugly, scary scene. The officers there doing the right thing, all right. Than you, t. J. Much for ahead. Those dramatic developments at the university of missouri. The president stepping down. The chancelloreieing reassigne and racial tensions and protests over there. Will other colleges follow suit . Now the student whose hunr strike started it all is going to spepe out only ongma. A new lawsuit taking on one of your favorite cereals right there. Well be right back. America to stir up the holidays, before earning 1 cash back everywhere, every time and 2 back at the grocery store, even before they g 3 back on gas, all with no hoops to jump through, thr Bank Americard cash rewards credit cardrd to sweeten the holiday season. Ths t spirit of rewarding conneneions. Apply online or at a bank of amica near you. Today is the day. Hellmanns a holiday leftovers become irresistibly creamy turkey casserole. Real delicious hellmanns. Bring out the hellmanns. Bring out the best. Eucerin intensive repair. 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