And living on the edge, quite literally. The daredevil cyclist risking life and limb to take on the famed Red Rock Cliffs of sedona, arizona. This morning he tells gma how he pulled off his amazing whiteknuckle ride. Thats what it is. Hey, good morning, everybody. A huge day for sports fans. This is selection sunday. I have to admit, i geek out today. Its one of my favorite days of the year. Later today, well learn the teams competing in march madness. And coming up, were going to get expert advice on how the fill out bracket for the office pool. In your defense, you do geek out most days. I do. This is just a special geek out. First, the top story. The major flooding from the gulf coast to the great lakes. Causing people to leave behind their homes and businesses. Rivers jumping their banks. There are road closures, evacuations. One man swept away. Rob is tracking it all. For us this morning. Hi, rob. Hi, paula. Two weeks ago, nearly two feet of snow across the ohio river valley. This week, two to four inches of rainfall. That combination, not good for some. Water levels rising on the ohio to nearly six feet above flood stage. This boat barely getting under this bridge. For many on the ohio river valley, remnants of winter rearing its ugly head, melting snow and ice causing chaos. This photo captioned melting snow plus spring showers equals a very angry ohio river. Describing the dire situation some residents face. In louisville kentucky rescue teams december rattly semplging the ohio river for man walking on foot, swept away by the rushing river. Watch as they comb through the murky flood waters. Meanwhile, main streets in the area shutting town. Cincinnati is prepping for the worst. Nerve racking. Stressful. Reporter the red cross setting up a local shelter overnight for residents living in threatened areas. The river expected to crest later this morning. Likely to be the highest level since 1997. All these little red areas, those are other area rivers some tributaries, feeding into the ohio and mississippi. Theyre in flood stage. Many will remain there for the next maybe even day or so. The good news is, we dont have a whole lot of moisture to add on to that in the next 48 hours. The jet stream remains to the north. Well see temperatures moderate a little bit. Weve had tremendous snow pack. Thats adding to the problem. Meanwhile out west record high temperatures in los angeles yesterday. Well see more records today. Well talk about that heat laettner the broadcast. Well continue to cover the flooding straight through world news tonight. Now, another developing story, ten americans who may have been exposed to ebola in africa are flying to the u. S. Right now to be monitored. These people are free of symptoms, we should say. They were possibly exposed to another American Health care worker who did test positive for ebola and is now being treated at this hospital in maryland. Lets turn to dr. Richard besser. As you might imagine, a lot of people hear theres a plane filled with people who may have been infected with ebola and theyre coming to our country. They get a little bit worried. Should we be worried . I dont think so. I think this is the right thing to do for a number of reasons. These are americans who have gone to west africa to try to knock this epidemic out. Thats whats going to make us safest here in the long run. While some of them may have been exposed, no one is sick. But with ebola, you cant transmit this disease until you have symptoms, severe symptoms. Theyll be put under quarantine. Theyll check their temperatures twice a day. If they have the slighstst fever, theyll be put in isolation. Theyre doing heroic and dangerous work overseas. But speaking of overseas you have been there on the front lines of the ebola epidemic. Do you have any hope that this thing can be snuffed out . I do. Im seeing some very positive signs. So like so liberia, where weve done a lot of reporting, the u. S. Has had the biggest efforts. No patients currently being treated. No new cases in two weeks. If theres no cases for the next four weeks, they declare it totally ebolafree. Sierra leone and guinea are seeing 100 cases a week between the two of them. If the International Effort continues, they may be able to knock it out by early summer at the latest. We have to continue the effort. And the americans are part of that. It will allow us to sleep better here. Its a good example of international cooperation. Dr. Besser, thank you. Now a devastating crash caught on camera. A train barreling down the tracks. And suddenly a car tries to cross with deadly results. This is the latest in a string of similar accidents across the country. Gloria riviera is in our Washington Bureau with more. Gloria . Reporter good morning. That video so hard to watch. Overnight, another vehicle struck by a train with multiple fatalities. We have heard far too many stories like this one lately. One witness saying this car was pulverized. Shocking video of a train crash in louisville, kentucky. Just the latest in a string of deadly train collisions in the past few weeks. The accident occurred just after 4 00 p. M. On saturday when a car plowed through the intersection. Signals at the crossing went off. But there was no gate to stop the driver. Those were flashing lights there at the scene. Obviously when there is a guard, there may be more of warning. But theyre distracted. Reporter four people were in the white toyota camry at the time, which was pushed half a mile down the tracks. We have four patients. Be advised, theyre all critical. Reporter two were pronounced dead at the scene. Two were taken to university hospital. The train did not derail. No personnel on the train were injured. This is the fourth train collision in recent weeks, where fully functioning train crossing signals failed to keep drivers off the track. In february a new york train crash left 6 people dead and 12 injured. Another commuter train crash last month in california was deadly. And the amtrak derailment in Halifax County north carolina, just last week that injured more than passengers. 50 passengers. Oh, oh. Reporter the Louisville Metro Police are investigating. There is no connection you saw between the men you saw filming the video and the incident. Dan . Paula . This just keeps happening. Thank you, gloria. Now to a fresh alleged atrocity with isis. Kurdish forces on the ground in iraq say isis fighters used chemical weapons against them, specifically chlorine gas. Lets bring in george stephanopoulos. Is news like this likely to help president obamas uphill battle to force congress to give him approval to continue the fight against yis wrist . Isis. Maybe on the margins. But its a tough fight for the president. That authorization request is getting cause in a vise between democrats on the left who want to make sure that the authorization actually limits the president s ability to put troops on the ground. And the republicans, who want no limits at all and want to authorize the use of more ground troops. Its a very uphill fight for the president. Its also getting caught up now in this whole controversy over the iran nuclear negotiations. Secretary kerry will be in switzerland again today trying to wrap up the negotiations. Before the end of the month. But as you know theres a real backlash now against congress who sent a letter 47 republicans september a letter directly to the iranians suggesting any kind of agreement can be undone. Everything is getting caught up in that debate. I dont expect anything to happen on the use of force resolution for several weeks, maybe even months. We see in the latter half of the latter term of a twoterm president that Foreign Affairs takes precedent. Here we are again. Its real crunch time on the nuclear negotiations. Thank you, george. A reminder, george will be hosting this week talking about the latest in the Hillary Clinton email situation. And much more. If you have questions, you can tweet him gstephanopoulos. Thank you, george and dan. Were so happy to have ryan smith back in for ron. Good morning, paula, dan, good morning to you. We begin with terrifying moments aboard two separate flights. Both jetliners with landing gear problems. Passengers on one flight told to put their heads down and brace themselves. Tai hernandez has more. Brace, brace reporter two plane scares in the sky. Both make emergency landings. Brace, brace reporter both have problems with landing gear. One was gojet flight 3645, a regional jet flying from grand rapids to chicagoohare. The pilot announcing the planes front wheels wouldnt deploy and to brace for landing. The pilot did an amazing job in landing us. A baby was screaming. But everyone else was pretty calm. Reporter meanwhile, united 3870 also forced to turn around. Captured on tape, a tire blows out during takeoff. Terrified passengers clutch their seats. A passenger films them preparing for the worst. It was kind of scary. The impact was pretty noisy. The plane shook a little bit. But the pilot did great job keeping everything going straight. Reporter instead, cheers and applause. [ cheers and applause ] reporter for good morning america, tai hernandez, abc news, new york. Tai, thank you. Now a push this morning to get the mayor of ferguson out of office. Overnight, protesters took to the streets for mostly peaceful protests. Meantime, several residents have filed an affidavit seeking to recall major james knowles. Six City Employees have been fired or quit since the scathing Justice Department report found widespread racial bias in the Ferguson Police department. Knowles has said he has no plans to step down. A wild crime spree in orlando, florida. Orange county police say it all started with a car jacking early saturday. The suspects used the car to go on a random shooting rampage. A teen ager and his grandmother were shot in their car, suffering minor injuries. When deputies spotted the men, the suspects fired at them. None of the officers were injured. And take a look at this. An air show high above takes a horrifying turn. Two planes clip each other in midair, bursting into flames. One of the planes crashing to the ground. One hitting a nearby village. Both pilots ejected safely. Thank goodness. They suffered minor injuries. Finally, a true birds eye view. Take a look. This eagle sets a new world record, soaring off the tallest building in the world in dubai in the highest recorded bird flight ever. Hes the worlds greatest tour guide. Take a look over here, nothing to see. Lets move on. He had the camera strapped on to him. Shows the stunning view of the city. Whats more incredible than that, that landing. How about that . Stuck it perfectly. This unbelievable precise landing on the arm of his handler. All of this a stunt to bring awareness to endangered birds. But thats why they call it the eagle has landed. I wondered how we got those spectacular views. Because of that camera. It wasnt a drone for once. Not a drone. Someone had to bring him to the top of the building and push him. And he flies. Nature takes hold. And fear. We want to show you incredible new video this morning. This is a car racing more than 250 miles and hour and then wow, siddenly snapping in two. Going airborne. The driver somehow walked away from this. Mara schiavocampo is all over this story. Mara, good morning. Reporter good morning, dan. Really unbelievable video. That driver says it felt like being on a roller coaster while the car was in the air. And hes grateful that all of the safety features worked in an accident that can only be described as jawdrobpping. Overnight, a drag racing superstar miraculously survives a crash after his rocket fuelpropel ed fuelpropelled car snaps in half at 262 miles per hour. Sending the driver flipping down the track at a National Hot RodAssociation Race in florida. Watch at larry dixon is launched over 20 feet into the air. Whoa hold on reporter smashing into the concrete wall. Tumbling down the raceway, to the horror of onlookers. Emergency crews rushed to the scene, expecting the worst. But dixon, incredibly, no worse for wear. Waving to the crowd as he walked away from the mangled wreckage. His spirits high despite his brush with death. The best i can tell is that the front half broke. I mean, captain obvious. Gosh, it was up in the air for a long time. Reporter this scene, all too familiar for the champion driver, who survived a similar accident on a memphis track in 2000. His car capable of going from 0 to 100 in a second catapulting off the ground my Goodness Gracious reporter while competing in one of the fastest races in the world. Leaving dixon seriously injured. 15 years ago, i got a helicopter ride to the hospital with a broken leg. Reporter crediting updated safety features, dixon grateful he escaped this crash unharmed. My back is a little sore. My knee got banged around a little bit. But im here. Walking. Got out of the car. At least im in one piece. Reporter amazing. We still dont know what caused that accident. Dixon doesnt have a backup car. He says other teams have offered to let him use their backup car if he decides to finish eliminations today. He was one of the first drivers to wear a helmet restraint system for safety, before it was mandated. And those safety features really helped him this time. They did. Im surprised hes willing to get back into any car at this point. This is the second time this has happened to him. Its a testament to the safety parameters. And technology that he has the option to get back in the car. A lot of it is mandated because people like him started using them. Mara, thank you so much. This is no ordinary sunday. Its selection sunday as dan mentioned, im geeking out. It marks the beginning of march madness, when millions of us fill out brackets attempting to determine who will win and who will do home. Morris the shot to win it. Reporter theres one day bigger than all the rest in College Basketball. And its today. Selection sunday. When 68 teams wait to hear their name and whether theyve punched a ticket to the big dance. They call it march madness. And let it begin. The clock is ticking. Its time to spend minutes, hours, maybe days filling out your brackets. According to the american gaming association, an estimated 40 million americans will fill out more than 70 million brackets waging 9 billion. Thats more than double the amount that was bet on the super bowl. Now, picking a perfect one shouldnt be hard, right . In last years buffett challenge, brad binder went a perfect 360 before his bracket was busted. Kissing the hopes of being a billionaire goodbye. And get this, you have a better chance of winning the lottery because these odds are 1 in 9. 2 quintillion. Dont worry if you cant fill out your brackets at home. Employers are bracing for the inevitable dip in productivity from march madnessrelated activities. A dip that could cost them an estimated 1. 2 billion. What does it take to beat the odds and create that mystical perfect bracket . No one knows. But maybe this year, your bracket will beat the odds. And the buzzer. And he gets the shot at the buzzer reporter and quintillion, by the way, 18 zeros. In case you were wondering. Were joined by espns resident College Basketball bracketologist, joe lunardi. Hes at espns bristol head quarters. Good morning to you. Thank you for joining us. You are the main man this time of year. Help us build the best bracket. What is the strategy . I think expect the unexpected. Right . There have been 30 years since the field expanded to 64 or more teams. Only one time, one time, have all number one seeds advanced to the final four. If youre going with chalk, you better bring an eraser. Okay. Good advice there. We dont have the field yet. Thats a little later. Who do you think will be selected as the four number one seeds tonight . That said, who is your pick to win the National Championship . I think we know who most of the number one seeds are at this point. Not many games still to go. Kentucky will be the number one seed overall. In the midwest region. Others likely to include, villanova, duke, and wisconsin or arizona, depending on game today involving the badgers. I believe it will be wisconsin. And if youre picking and youre not going with chalk, youre taking a field against kentucky. Which means, kentuckys a lock to win since i just said the opposite. [ laughter ] reverse psychology right there. Kentucky is, as most people know, undefeated. Our bracketologist joe lunardi, thank you for joining us. Good luck on your bracket. Okay . You bet. I would like to invite you to join my espn tournament challenge. All you have to do is search my name under group thats on the espn web page, tournament challenge. Its fun. Mildly painless. Im bribing everyone with bacon. Winner gets a bounty of it. Bacon . A bounty of bacon. Dont you have to know a lot about the teams. For instance, my 2 1 2yearold daughter almost beat the entire office pool. Youre telling us dan has a shot . Of course he does. If you go with me, its like in the super bowl when they have the octopus pick the winner. Thats my role. So exciting. You have your own tournament there. Maybe bacon or tofu bacon for the vegetarians. Tofu . You just ruined it. She did that for our friends in california which is where were going to start the weather. Boy, its hot out there. Theyre running the marathon today to work off all that tofu. A half hour earlier. Lets show you the video. Oh, goodness. I know its hout hot out there. In some cases, dangerously hot, but does that not look great . You get to the beach and sunshine and the pacific ocean. Its a good place to cool off. Theyll do it again today. Hundreds of thousands more will be at so cal beaches today. Records. 93 in los angeles. The average high is 70. Some of the records, blowing out the old records by five or ten degrees. Remarkable stuff. Another hot day today. The heat builds up towards the northeast of the rocky mountains. 82 expected in rapid city. 73 in fargo. This may be the earliest we have seen 70 in fargo. We get another cold front on monday. Things will begin to cool down. So cal will remain on the warm side. This will eventually get to the east coast. Pacific northwest, you have a strong system im not against tofu. I think it can be very good. Im not buying it. Im all probacon. A jetsetting pastor. A controversial megachurch televange televangelist making headlines. Why hes asking his flock to buy him a new superluxury gulfstream plane. And this cycler on the side of a mountain. Seemingly defying gravity. How did he pull this off . Very carefully. And bristol palin. Taking a big step. The major announcement shes making about her future. Making about her future. Coming up in pop news. You wouldnt do half of your daily routine. So why treat your mouth any differen