Nearly 48 hours after a horrific crash in oklahoma there are more questions than answers. 25yearold adacia chambers will be in court today. She was arrested on suspicion of driving under the influence. Four people were killed at Oklahoma States homecoming parade including a 2yearold boy and a married couple. 11 children were among the 46 hurt. Several remain in critical condition. Adriana diaz has video of the crash as it happened, and a warning, it can be hard to watch. Reporter as many as 500 people were at the intersection when the car barreled into the kraud. All available units. All available units, need you to respond to one hall of fame and north street. They didnt know what hit them. Reporter Anthony Wyatt saw the hyundai sedan going 40 miles an hour and tried to stop it. I see a car hit the barricade and i jump out and i go no, youre going the wrong way, stop, stop. And she floorboarded it or whoevers in there floorboarded. I could see the wall of people. I knew what was going to happen. And she hit the motorcycle and it went everywhere. Reporter the adriver, 25yearold adacia chambers, was arrested for suspicion of driving under the influence. Three people died at the scene including marvin stone and his wife bonnie. Marvin was a retired engineering professor at osu. 23yearold nikita prabakhar, a student from a nearby university was also killed. Hours later 2yearold nash lucas died at the hospital. He was an only child. 46 others were injured, some critically. The incident happened after chambers left her job at freddies frozen custard. Its roughly half a mile down main street. Chambers fiance told cbs news she left work early but didnt know why. In a phone interview with cbs affiliate kwtv adacias father, floyd chambers, said his daughter doesnt drink or take prescription pills. Shes not a bad person. Shes not an alcoholic. She doesnt drink and she wasnt drinking. Shes a good person, a loving caring person. This is just a tragic thing that happened. I dont know why it happened. Reporter Anthony Wyatt said the driver made no attempt to stop. Did it seem deliberate . Oh, yeah. From my perspective, yeah. Because when she hit the when she hit the barricade then she gunned it. She dropped on the gas. Is it hard for you to be back here . No, i wanted to come back here and pray this morning. You see Something Like that, you cant erase it. Reporter chambers is being held on charges of seconddegree murder. Jeff, shell be arraigned tomorrow afternoon. Adriana diaz, thank you very much, in oklahoma tonight. Flash flood warnings stretch across the coast of texas and louisiana all the way to the florida panhandle. David begnaud moved east with the storms and reports now from carencro, louisiana. Reporter as the rain rolled in overnight so did the calls for help. Rescue 11 alpha. Reporter this man clung to a tree according to firefighters who rescued him. David swanson is a district chief with the houston fire department. He called 911 and dispatched the units, and we got here and it took us a while to locate him. Reporter roger choate was stranded in his car. Didnt see it until i hit it. Got out and i just stood there and watched my car slowly disappear. You called 911 . 911, yeah. You left the keys in the car. Yeah. Reporter we saw duc nguyen staring at his stranded sedan stuck for more than nine hours. Duc says when he drove under the overpass there were no barricades to stop him and he couldnt see flood water. He says he was in the righthand lane. He hit water and his car moved left. It stalled. So he got out and abandoned it. At midnight he says the water was near the tire level. By 4 00 a. M. It was nearly submerged. Looking inside around 9 00 a. M. , theres water inside thats nearly up to the rearview mirror. In the last 24 hours there were at least 28 water rescues in houston. A deluge that hit the city was made worse by hurricane patricia. Rain fell as much as two to three inches per hour at one point. Most of Southeast Texas has been under a flood watch all day. Near the texasmexico border last night in the city of westlico one woman found her home in kneedeep water. There is late word tonight of a levee breach in navarro county, texas south of dallas. That area saw 18 to 20 inches of rain this weekend. The flood water in houston is receding and the rain is moving east toward louisiana where we are feeling it tonight. Nearly 85 of the bayou state is under a flash flood watch. And jeff, that alert extends along the gulf coast, affecting more than 6 Million People. David begnaud, thank you. The Iowa Caucuses are 99 days away and a new cbs poll shows ben carson has moved into a tie with donald trump in iowa. On the democratic side Hillary Clinton is three points ahead of Bernie Sanders. Nancy cordes is in des moines. Lets give our democratic president ial candidates another round reporter in a des moines arena the candidates went head to head and their supporters did too. I believe that she will win we want, we want bernie reporter on stage, sanders showed a sharper side, calling out the frontrunner, though not by name. I will not abandon any segment of American Society, whether youre gay or black or latino, poor, working class. Just because it is politically expedient at a given time. Reporter he highlighted his longtime support for samesex marriage and opposition to the iraq war. Implying clinton was late to the party. I listened carefully to what bush and cheney and rumsfeld had to say, and i said no. Reporter clinton had less to say about him, though she did argue shes more electable. Its not enough just to rail against the republicans or the billionaires. We actually have to win this election. Reporter the Jefferson Jackson dinner is attended by thousands of Party Faithful who want to be wowed. Clinton was upstaged here eight years ago by an upstart senator from illinois. America, our moment is now. Reporter so this time her campaign pulled out all the stops, with a predinner concert by katy perry and the First Campaign remarks by former president bill clinton. I want to break a ceiling. I am tired of the stranglehold that women have had on the job of president ial spouse. Reporter the new cbs news Battleground Tracker shows clinton supporters are more enthusiastic about her candidacy than they were even a month ago bringing her closer to the level of enthusiasm that Bernie Sanders supporters feel. And thats important, jeff, because the most enthusiastic voters are the ones who are most likely to bundle up and head,, the body of Army Master SergeantJoshua Wheeler arrived at Dover Air Force base in delaware this weekend. He was the soldier killed thursday during a raid in Northern Iraq to free dozens of prisoners held by isis. Tonight there is dramatic new video of that raid from a camera mounted to a soldier. Heres Elizabeth Palmer in Northern Iraq. Reporter in the video, captured by a helmet camera, dazed and terrified prisoners bolt from their jail before dawn, helped along by Kurdish Special forces. In the background you can hear constant gunfire asurds and American Special forces battle isis fighters, whose ferocious initial resistance killed Master Sergeant wheeler. Theres a glimpse of a huge isis flag and jail cells built inside the house of a tribal leader. When the prisoners first came out, 69 of them in all, they were patted down by kurds, but you can hear there is american backup. Hey. Hold them up right there. Reporter these are not the prisoners the raid was designed to rescue. The kurds had hoped to find 20 of their own fighters who were captured and paraded by isis f. As soon as the raid was finished, a Coalition Aircraft flew over the compound and destroyed it with a bomb. In the Morning Light video posted by isis shows the wreckage and the casualties of a ferocious battle. In all, say the kurds, isis lost 20 men. On top of those 69 prisoners, jeff, the raid also netted six live isis fighters who will be a very valuable source of information for both the kurds and the americans as they build up a more complete picture of how the group is structured and how it operates. All right, liz, thank you very much. The state of floridas holding its first statesanctioned bear hunt in over 20 years. It was supposed to last a week, but so many bears have been killed it might close earlierex. Heres jamie ukas. Reporter when the hunt started on saturday officials said up to 320 bears could legally be killed. By midday today hunters had killed 293. The Florida Wildlife Commission may shut the project down tonight and stressed in a Conference Call that the numbers are still in range. None of these numbers are worrying to us. We have large resilient bear populations. Reporter in 2012 the black bear was still on the endangered species list. Now wildlife officers estimate there are more than 3,000 bears in florida and fewer places for them to live. Cameras have caught bears walking by bicyclists on a neighborhood street, roaming through yards, and going through garbage, even making themselves a little too much at home. Central florida Hunter Brian Smith says theyve become a nuisance. They do a lot of damage on the property. So its nice to be able to take this one out. For the love of the bears reporter Animal Rights activists protested for six months before the hunt, which was unsuccessfully challenged in court. Opponents like nicole bauer monitored the bears being brought in. Its beyond me that thats our only means, just to kill them. Reporter but more than 3,700 hunters got permits. 70yearold grandma Glenda Bryant was one of them. Youve got to be in it to win it. Reporter she came home emptyhanded but was glad to see the hunt was successful. The basic problem with some of these bears is theyre just roaming around and they tear stuff up. Reporter wildlife officials admit the hunt went much faster than they thought it would. One hunter was ticketed for killing a bear cub. Another received a warning for killing a bear under weight. Jamie, thank you very much. A Study Suggests new guidelines for fasting during labor. And why a famed artist will not be making his statement with legos. The overnight news will be right back. [coughing] [coughing] [coughing] [coughing] [coughing] coughing disrupts everyones life. Thats why so many people are turning to delsym for longer lasting cough relief. Delsym has an advanced time release formula that helps silence coughs for a full 12 hours. Thats three times longer than the leading cough liquid. All night. Or all day. Skwhat are you doing . I just gotta scrape the rest of the food off them. Ew. Dish issues . Cascade platinum powers through this brownie mess better than the competition, the first time. Cascade. For years women have been told its dangerous to eat during labor, both for them and their baby. A new Study Suggests that may not be true and that food could actually be a good thing. Heres contessa brewer. Reporter ask moms whove been through labor, how they feel about fasting their way through the ordeal. Its really impossible, i think just to feel like ice chips would be enough. Reporter for generations the rule was no food or liquid because of the risk of inhaling it into the lungs. Especially under general anesthesia. Good morning. Reporter but anesthesias changed. Now typically an epidural or spinal block. Dr. Tara sharazian is an obstetrician at nyu langone medical center. The rules that have been in place for eating and drinking during labor were intended for practices that have been outdated for generations. Absolutely. They are practices that do not affect the vast majority of women. Reporter a study by the American Society of anesthesiologists now shows most healthy women would benefit from a light meal during labor. Researchers analyzed hundreds of recent studies and conclude moms in labor need the same kind of energy and calories as marathon runners. When they dont get it, their bodies turn to fat for energy. That can reduce contractions, leading to longer labor and lower Health Scores in newborns. Lowrisk women, some drinking and mild fluids, light meal is okay. Reporter the revised advice should mean most moms come out of the delivery room feeling only pangs of love, not hungry. Maybe not a french meal. Not a threecourse meal but yeah. Yeah. Its physical effort, right . Reporter well, not every obstetrician will be quick to change protocols, but experts say it should allow for a conversation before the babys due date about each womans particular situation, health and risk factors for eating and drinking at the hospital. All right, contessa, thanks very much. Up next here, Rising Health care premiums. How high will they go . As enrollment opens for employeebased health plans there is sticker shock across the country. Outofpocket costs are going up again. According to one study deductibles have climbed seven times faster on average than wages over the past five years. Cbs News Business analyst Jill Schlesinger is here with more on this. Before we talk about why lets talk about what. How much are costs going up . Kaiser says Insurance Companies are charging our employers 4 more. Thats not the big number. The employers are now going to turn around and pass that on to us. So heres the damage. The average premiums that we pay over 1,000 for singles, almost 5,000 for families. Employees premiums have increased by 24 in the past five years. A staggering 83 over the last decade. And thats not all. Because we also have the deductibles, right . The amount of money out of pocket before our insurance kicks in. Thats about 1,100 for single coverage. Its up 67 in five years. Why is all this happening . You know, its a combination of factors. We know that the prices for drugs and medical devices and inhospital stays has really been soaring. We add to that the demographics. We know weve got more people who are over the age of 60, were living longer, and in fact obesity, were getting fatter, thats adding to the problem. The question a lot of people ask is how does the Affordable Care act or obamacare play into all this . You know, unfortunately, although obamacare actually enrolled millions of people it didnt do a lot to contain costs. I know thats a bit of a head scratcher for people. But it really didnt. Prices are all over the place. We saw a nationwide study for mammograms. Anywhere from 43 to almost 1,900 for the same test. We also know that the price of a hepatitis c drug for a 12week course is over 80,000. If youve got a rare disease, that can be up to half a Million Dollars. More people are enrolled in the health care plans. We just havent done enough to contain those costs yet. Jill, thanks very much. Thank you. The chinese Artist Ai Weiwei is feuding with the lego company. In an Instagram Post he says the company wouldnt sell to him because it cannot approve the use of legos for political works. A new lego theme park is in the works in shanghai. Weiwei placed some legos in the toilet in protest. Still ahead, unmasking emotions. Theres an app for that. But what is it being used for . , finally tonight, our smartphones can now read our emotions and react. Which as don dahler reports, creates a world of interesting possibilities. Reporter the devices we cant stop looking at in a soon be looking back, observing our joy and sadness and expressing it alongside our texts and chat. Were all about bringing Emotional Intelligence to our digital world. So emoejis arent enough . Emoejis are not enough. Reporter rana klaiovy and the team at m. I. T. Recorded the facial expressions of more than 3 Million People in 75 countries to develop emotion recognition software. Its mapping all the different textures, wrinkles and facial movements. We are able to read about 15 facial expressions. And then these combine to create or portray about eight emotional states. So happy, sad, fear, anger, disgust, contempt, confusion, surprise. Reporter so far the primary money maker for the app is audience testing of commercials, programs, and movie trailers. 1,400 brands used it to find out frame by frame whats funny or sad or spellbinding or boring. Our final story begins with a chance encounter in our own test two staffers watched a cbs news story by steve hartman. This line shows the reaction to a little boy who finds 20 and gives it to a soldier. Because he was a soldier and soldiers remind me of my dad. Reporter we learn that dad was killed in action in iraq. But later the kid gave you a bigger gift than 20. A lifetime direction. Reporter the line climbs back up. You see the emotional journey. Reporter elkalayavy is working to expand the use of the app in the Mental Health field for depression and to bring emotional interactivity to you every day, like this robot that comes to you when you smile and runs when you frown. We envision a world where all our devices have an emotion chip. Could be things like your car or your fridge or your mirror. Theyre all emotion aware and they can sense and adapt to your emotions in real time. Your car would know if youre about to get road rage. Yeah. Exactly. But theres a little bit of a creepy factor. Are we losing privacy with this kind of technology . The fact that all of our contr