Thousands of Power Outages and more evacuations across the south. Nearly 30 Million People facing a new threat today. And a group of women brawl in the aisles during a Cross Country flight. Police greet them as they arrive in los angeles to the delight of fellow passengers. This is today with matt lauer and Savannah Guthrie live from studio 1 a. Welcome to today on a thursday morning. We have balloons out there. We are saying good bye to wrangler. Big sendoff for that little guy. Things you dont do on a plane. How about that fight . Apparently no arrests. And wait until you hear what it is ridiculous. More on that in a moment. That deadly shooting in a neighborhood outside of pittsburgh and the desperate search for at least two gun men. Good morning. Reporter good morning. Police have left the scene but tell me they will be back out to the shooting scene behind me here soon. Allegheny county police say they are looking for two gun men they believe carried out the attack about 1 00 1 00 last night. The gun men open fire in an ambush style attack during a barbecue. Bullets riddling a backyard filled with party goers. Weve got multiple people shot here. I have six people down. Total of five people with gunshot wounds, two in critical and one in stable. Police say the bodies of four of the victims, three women and one man were found on the back porch of a house. Investigators say shots may have been fired into the rear of a home and two different weapons could have been discharged from two different suspects. Residents say they were walking in the area when they heard gunshots and saw people walking away. Probably shocking everyone else up here. Im shaking because its pretty bad. Right now police do not have a motive for the shooting. As for the three surviving victims two men are in Critical Condition and one woman in stable condition at the hospital. Thank you so much. Let us turn to the president ial race. Hillary clinton and Bernie Sanders clashed on the debate stage last night ahead of next tuesdays crucial winner take all primaries in florida and ohio. Their own debate tonight. Both races covered beginning with democrats and nbcs kristen welker. Reporter secretary clinton and senator sanders will send the day barn storming. Ohio and illinois looking a lot more competitive. The biggest prize is right here, florida. With the democrats locked in an increasingly fierce fight secretary clinton faced one of the sharpest exchanges yet. You its not going to happen. Im not answering that question. Reporter clinton took aim at senator sanders for opposing the auto bailout. If everyone had voted as he rescued it was the wall street clinton used the strategy heading into the michigan primary but still lost in a stunning upset to sanders. She is hoping the attack will help win chicago. The candidates sparred over immigration. You are telling us if you become president you wont deport children . I would not. I dont think the secretary fully answered the question. I think the proof may be in the pudding. Reporter while both candidates took sharp aim at donald trump they deflected a question about whether he is a racist. I think it is unamerican. I think what he has promoted is not at all in keeping with american values. I think that the American People are never going to elect a president who insults reporter and clinton with a rare moment of candor when asked why so many voters say they dont trust her. Im not a natural politician. I have a view that i just have to do the best i can. Reporter senator sanders still has a very steep climb in order to win the nomination he would have to win more than 65 of the delegates moving forward but he has a lot of momentum and a lot of money in his war chest. That momentum could be key going into next tuesday in ohio and florida. Reporter the stakes couldnt be higher next tuesday. If secretary clinton has a strong showing and wins florida and ill it a front runner and puts the race out of reach that is something she and her team are eager to do. In ohio or missouri this would make him a real contender and he is making a real playse states outpacing secretary clint in ad spending and would add toum. That is when you see the race stretching through the spring and possibly the convention. Lets talk about theicans meeting for the 12th debate of the campaign and there are signs we might not see tough dominated last week in detroit. Peter alexander is covering the race for reporter beautiful back drop here at the university of miami. Marco rubio is candidly acknowledging that his personal mudslinging may have back fired. He is going to have to change to winy. Youre going to love your president. Reporter donald trump looking to notch another win in north carolina. He has the great wall of thats done with love. Reporter raising eyebrows when asked whether islam is at war with the west. I think islam hates us. Ere is something there that is a tremendous hatred. Reporter stepping in the ring with rivals the billionaire boasting he willhe championship belt with wins in florida and ohio next week. The ultimate way of doing it. If you knock him out nothing canppen. Reporter will marco rubio pull his punches . Facing do or die in his home state the florida senator bout trading insults with trump. You know what they say about s. Reporter speaking with chuck todd. Not something im entirely my kids were embarrassed by eporter compare that to comments last week. Are you sorry you went there . Donald trump spends a year on a regular basis. I said something one time. Reporter his crowd countn the hundreds in a Florida Stadium that seats our campaign has beaten donald trump not once, twice, three times but eight separate reporter touting new support from a familiar face, fiorina. Other people in our party are horrified by donald trump. Reporter john kasichs positive push may finally pay i refuse to get down in the mud to be elected president of the united states. I reporter with new poll im going to win ter predicting victory. And one outstanding question is will the former florida jeb bush endorse any candidates. He met with marco rubio yesterday and will be with ted cruz and john kasich today. Tell nbc news he hasnt made a decision whether or not he will endorse. What happens tonight at the effect that choice. Who could forget last weeks debate . It got so personal and so now about how the candidates adjusted their strategies or should we expect more of the eporter marco rubio telegraphing the need to focus more on policy and demonstrate that donald trump is more of an empty vessela better choice. Ted cruz and john kasich doing the same. All candidates trying to trump ahead of super tuesday. 367 delegates there. Rubio said he will win his own john kasich said he will win his state. They may cater their mess mgs to those nald trump has won 44 of the delegates. If he winz wins florida and e will need 59 of remaining delegates to clinch nomination. Even for trump the stakes are florida, florida, florida, ohio, ohio, ohio. Lets take a look at deadlys the south. Record rain, historic flooding with tens of millions still facing tough weather today. Is in hardhit louisiana just east of shreveport. Reporter good morning. N louisiana. Some homes behind me have as much as five feet of standing here expected five inches of rain additional today and also this time the threat ofrnadoes. For a community so battered the fear this morning what is coming next. Ther is putting millions at risk. Tens of thousands still without power. Record breaking rainfall and deadly flooding the south. Waters devastating parts of east texas and louisiana. Overnights flash floods in west road closures as rain water inundated this shopping center. In shreveport soment get back to their homes. Many residences submerged to the the water level so high this bridge barely clears the flooding. There is nowhere for the water to go. The ditches are full ando rain. Simply abandoned in the road. It feels like a current from a river. I have no idea how to deal with a flooded house. Reporter coming to the rescue of elderly and so did thetional guard. Residents forced to evacuate themselves and their pets. Others from ruined homes. Everything you see is gone. I have a brand new roof on a house that is absolutely s. Me and my kids lost everything today. We need dry clothes. Reporter there are temporaryome of those displaced. We want to keep everybody safe through this and going to work together. We will get reporter those residents are anxious to see when they can return and what will be left when they dot a lot left. He has three little girls, their bedrooms that were dry handful of clothing. Heartbreaking. Janet shamlian, thank you very much. What is going to happen with all of unfortunately, we dont have relief for at least the next 72 we have an upper level low over mexico blocking high pressure. You can see this rain train coming in pushing in more rainn texas into louisiana and now into mississippi. They have dropped some warnings back through central texas. 15 Million Peopleg risk because it is only going to take another half an inch to inch of rain to cause more flooding. The storms move over the samedy with saturated ground. The heaviest rain starts to shift east into alabama, panhandle of florida. Look at the rainfall totals. We are expecting upwards of to ten inches of rain throughout much of louisiana. That moves on into parts of least 72 hours and then it finally does dry out. Right now not good. I havent seen a map likers in a long time. This is more like a hurricane, the moisture from a tropical system, these kinds rates. There are new developments on the failed drug test by Maria Sharapova that she claims was anmistake. Now a suggestion that she may have been warned multiple times that the drug in questiong to be banned. Good morning. In two days the worlds highest earning sports woman will temporary ban from tennis. Maria shaur rapova saying didnt have to go through this. The big question, is this the from the tennis world,ome plag major sponsors. Are you where you are today because you follow the sharapova broke rules and admitted it. I made a huge mistake. Reporter taking meladonium. Others say it is a bad day for the rules are like this. Its fair. Now she must pay for it. Er former coach blames her team. That is where her team let her down. Her physical trainer, doctor, coach, somebody should have looked at the list. Reporter antidoping month. Im sorry. If you are running a 30 million year you make certain you dont make anything that makes you ineligible. Reporter 23 million had come from her main sponsor, nike, has suspended her eight year 70 million deal. Other sponsors areher to cut ties. In an open letter to her fans sharapova says im determined to again and i hope i have the chance to do so. I wish i didnt have to go through this but i do and i e stakes are huge. Its not just the money. She faces a possible ban of four years. I dont want to end myyear. Reporter a lengthy ban would do just that for the Richest Woman in tennis. Re questions, too, for that world antidoping body. That was a known stimulant notwed in the u. S. To be legal for decades . Sharapova took it along with hundreds of world class athletes. M have not tested positive. How many more drugs are out there legal, not made for giving some a winning edge . That question to go around this morning. We have an update on the michigan water crisis. The city says it will stop sending water bills to residents until credits can be applied to those st week michigans governor approved a 30 million plan to help residents with their water bills. Was tainted with lead after the city switched from detroits Water Department to the flint river back in april the city switched back to the detroit system last october. The knife reportedly found most likely not connected to the killings of his ex wife and her the knife is common among garden gardeners and too small to make the wounds. That official says will take at least three weeks. We have more coming up on this warm weather that is going ur latest weather. Coming up, no place for a brawl, the fight on a crowded plane caught on camera. Wait until you hear how thisd. As people pay their final respects to nancy reagan her daughter speaks out in aninterview. What she is revealing about the good and bad times in their relationship. 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Youre back freeze it from discover. 7 30 on a thursday morning, 10th four days to go until an epic er plaza. Next monday cold play will do their thing live on oure. Wrangler said they are coming after i leave . Man hunt underway for at leastushed a Backyard Party outside pittsburgh. At least five people were killed and three others wounded. Faced a very Ongoing Investigation into her emails controversy. If you were indicted clinton admitted using a private email secretary of state was a mistake. Marco rubio is expressing regret over personal attacks heinst donald trump. Its not something im entirely proud of. Assed by it. If i had to do it again i wouldnt. Can candidates set to debate in miami tonight. Lets take a look at this scene on a flight from balos angeles. These are passengers having a fist fight in the aisle. This is a crazy story. Can you imagine being a passenger watching thisout . A group of women arguing when the plane finally landedthings got physical. It was an all out brawl caught on camera. Several women exchanging blows on a spiri as a plane full of passengers looked on. The last thing you want to see happen on a plane. Ter the flight broke out. The ladies were serious. To be honest i was definitely involved in the fight. Reporter Emerson Sylva and friends captured the video on cell phone. A lot of people were, nobody actually did anything. I saw the ladies swinging on each other, punching each other. The stewardess got we stepped in and broke the fight. Between a group of younger and older women after an argument over loud Police Responded taking away several women but Authorities Say no one was arrested or so what caused the brawl . This morning we received an explanation saying prior to landing two customers whoed to be intoxicated were playing loud music on a boom box speaker. Several other customers asked them to turn down the music. E first two ladies refused. They were holding it up in the air. This prompted the second group of customers to first group and a fight broke out. I feel like i just did play by play in a boxing match. A boom box on a were no charges filed because it happened once the plane was on the ground . Thats the stunning one was arrested or charged. Altercation we got to the it was apparently a boom box. That is crazy. Well move on now to a florida making headlines across the country. A mother is recovering this being accidently shot by her 4yearold son. Here is kerry sanders. Reporter the shooting story is l media but there is not a lot of sympathy for the gunshot victim. She had been shot by a hand reporter a 31yearold mother accidently shot in her truck. Do we have a suspect . Its going to be a 3 year reporter it turns out a 4 year old. Investigators say the child who pulled the trigger and shot woman in the back is the victims son. The questions that remain how was it stored in the vehicle and be in possession of reporter jamie gilt for gun sense is a facebook page. Just hours before it happened gilt posted even my 4 year old gets jacked up to targeta. 22. No 4 year old should be anywhere abomination. You are now the best adverb control. Authorities face two possible charges, culpable negligence and failure to store a firearm safely. Tragic im sure this child grows up will not be happy with his behavior and will regret this it is a shame this child in that position. A lot of unusual stories that is a sad one. Lets get a check of the weather with al. We have rain comingas you can see this is the rain going on in haughton, louisiana. L make its way into the northeast. We do see heavier showers s s makingo the northeast later today. We are also going to see very warm conditions. This blocking high keeping the moisture from moving in to help set up records today. 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