Killed by friendly fire in a shootout that was recorded by the alleged gunmans brothers. And just how smart is your phone . A new study finds you might not want to turn to those popular voice assistance in the event of an emergency. Good morning from the studio 57 newsroom at cbs news headquarters in new york. Good to be with you. Im annemarie green. We begin with politics and a day that could be pivotal for president ial hopefuls in both parties. Five key states hold primaries today. For the republicans, winnertakeall contests in florida and ohio. May be the last chance to slow Donald Trumps march to the nomination. For the democrats, Bernie Sanders is hoping for another comefrombehind win in a big state to cast doubt on Hillary Clintons candidacy. Don champion is in miami. Don, good morning. Reporter good morning, annemarie. Ahead, political futures are on the line for republican hopefuls like marco rubio and john kasich today. Both tried making last stands in their home states yesterday. Meantime on the democratic side, Hillary Clinton is trying to avoid any surprise upsets today. Bernie sanders riled up supporters late last night in chicago, urging them to take him to victory. Let us see this great state help lead the country into a political revolution. Reporter hoping to slow Hillary Clintons momentum, sanders is looking for upsets in illinois, ohio and missouri today. But the vermont senator faces an uphill battle in the delegaterich states of florida and North Carolina where clinton holds a sizeable lead. I am asking for your support. I would be it. Reporter millions of votes have already been cast here in the winnertakeall state of rubio 21 in polls. A trump win here will likely spell the end for rubios have to vote tomorrow. Dont stay home. Make sure no one stays home. Reporter and thrusts thendidate closer to locking up the republican nomination. He wont clinch but hell have a commanding lead in delegates and be in a commanding that he needs. Kasich cannot make America Great again. Cant do it. Reporter in the winnertakeall state of ohio, trump is neck and neck with johne popular governor. Give me a vote so i can continue to run for president of the united states. Reporter in missouri, ted cruz is fighting trump for and in illinois, the latest cbs news Battleground Tracker poll has cruz within striking distance. And just to show you how big are more delegates up for grabs today than almost any other day on the primary calendar. Aigns, it will be on to states like don champion in miami, thank you, don. Well, former republicanidential nominee sarah palin made a surprise appearance at a trump rally in tampa. She lashed out at the press for the way protests at trump red. What we dont have time for is all that petty little thuggery stuff thats been going on with these quote, unquote, protesters. Palin had originally canceled after her husband, todd, was involved in a snowmobile accident in alaska. Hes in serious condition with a broken ribs and other injuries. Well, coming up on cbs this morning, we will talk about the importance of todays primaries olitical director and face the nation moderator john dickerson. An american who had been fighting with isis is in custody this morning after hered in northern iraq. License, hes identified as mohamed amin of alexandria, he gave himself up to Kurdish Forces yesterday, and he said the situation with isis is not good. He was carrying a large amount of cash, three cell phonesof identification. Dont take a picture dont take a picture ress listed on the drivers license of the captured isis fighter, two men shouted and pushed reporters. At one point turning a garden hose on cameramen. Onfirmed that the isis fighter was related to them. The pentagon confirms, though, that an isis commander known as omar the chechen is described as isiss secretary of defense. The u. S. Government had a longstanding 5 million bounty on his head. He survived a u. S. Airstrike inria earlier in march but has since died of his wounds. And starting today, russia will begin withdrawing most of the surprise announcement yesterday, ending a 5 1 2month air campaign that bolstered the rebel forces. Putin and president obama talked by phone. Also yesterday, u. N. Brokered peacel war rheaumed in general neva. Police in toronto are trying to determine if a stabbing at a enter might be terror related. A man walked into the center yesterday afternoon and attacked an armed forces member. Others rushed to his aid, but a was stabbed. The injuries are not live threatening. The suspect made statements that led police to look into a tion. Three Chicago Police officers were wounded in a shootout with a drug suspect. The officers weresuspicious activity on the citys west side late yesterday. They approached a man and a woman who made a run for it. The man opened fire, hitting the their injuries are not life threatening. Suspect, and a woman was later captured. From the south to the are recovering from a rash and severe and in some cases deadly weather. Yesterday a tornado touched down north of dayton, ohio. No injuries are veral buildings were damaged. Large hail and strong windsern south carolina. Wind gusts reached 70 miles per hour. And a state of disaster has been declared in nearly 20 texasy drenching rain and severe flooding. Hundreds have been forced to evacuate. The investigation into an amtrak rails. Officials say the tracks had been inspected recently, but the engineer noticed something was the brakes. Omar via franka reports. Reporter teams of investigators are now on the scene in southwestern kansas to tryent an amtrak train flying off the need more personnel to respond to the Train Derailment three miles west of cimmr First Responders raced to free passengers trapped inside when eight cars derailed. Set a ladder up, and well some of these people off the top. The engineer was quite vigilant and noticed there was something wrong, put the train into emergency braking early. Y responsible for the Train Derailment not being any worse than it was. Reporter the amtrak southwest chief carrying 131 passengers and 14 crew members waslos angeles heading for chicago. 25yearold daniel serva was reading on board. He said he felt some turbulence ned drastic. I exited and as soon as i opened the room door, there was a large burning smell. Got outside and there was a lot eople crying for help, you know, looking for folks. So everyone was just kind of on both sides of the train, kind ofople, family members. Reporter more than 30 people were taken to nearby hospitals. Was going when it went off the tracks. Omar a, cbs news. Coming up on the morning news, a bizarre claim from the accused uber shooters. We will tell you what hes s deadly attacks. But first, caught on tape. A home on fire collapses with firefighters inside. Ning news. Diabetes n arent moving in the right direction, it can be a burden. But what if you could wake up to lower blood sugar . Imagine loving your numbers. Er oncedaily invokana. With over 6 million prescriptions and counting, its the 1 prescribed sglt2 inhibitorwer a1c. Rrr invokana is used along with diet and exercise to nsignificantly lower blood sugar in adults with type 2 diabetes. A oncedaily pill that works around the clock. Heres how reduces the amount of sugar allowed back in the process of urination. Its not for weight loss, it may help you lose weight. R r invokana can cause important side effects, nincl cause you to feel dizzy, p p faint, lightheaded, or weak, especially when you stand up. P p other side effects may include kidney problems,tal yeast infections, urinary tract infections, r r changes in urination, high potassium in the blood, p , or risk of bone fracture. Do not take invokana if you have lems or are on dialysis. Nstop taking and call your doctor right away if you r r experience symptoms such as rash, swelling,y breathing or swallowing. P p tell your doctor about any medical conditions, medications you are taking,if you have kidney or liver problems. R r using invokana with a sulfonylurea or insulin r r may increase risk of low blood sugar. Fe with a lower a1c. One invokana. Ask your doctor about it by name. Terrifying moments for firefighters battling flames at a maryland home. A wall fell on top of them. It happened early yesterday morning in eight firefighters were hurt, one seriously. The cause is undetermined. An uber driver blames an app for last months kalamazoo shooting search for Supreme Court nominee is narrowed to three. Those are some of the headlines on the morning newsstand. The new york timesfederal Circuit Court short list for the Supreme Court. Speculation is focusing on shri shrishrinavasa and paul watford. The Detroit Free Press ber driver accused of killing six people blames the rampage on the ridesharing app. Jason dalton told police after the shootings in kalamazoo last month that his cell phone took mind. Uber declined to comment. Usa today reports that Police Gunfire killed an ing a shootout in maryland. Colson arrived in an unmarked car during an ambush sunday at a landover police station. T was his actions that allowed officers to take a position where they could and in doing so was mortally wounded. An charged in the ambush expected to die in the shootout. Two of his brothers are charged for recording the attack on video. Thetford courant. He was expelled. His lawyer calls it e University Says he had nonconsentual sex with a female student in 2014. He denies it. And the Washington Post reports an nfls admission is connected to brain disease. Jeff miller acknowledged the link during a congressional hearing. Its the first such public e. Still ahead, comedian Jerry Seinfeld drives off with a fortune. We will tell you what an auction of his classic carought in. And you can thank drake later. The rappers trash talking helped the raptors, but is it this portion of the cbs morning news sponsored by seabond denture adhesive. No pasty ooze. Denture paste to seabond denture adhesive seals. Holds stronger than the leading paste all day. Without the ooze. Yourself. X with stronger, clean seabond. Trugreen presents the yardleys. Hello . oh yeah, come on in [claps] woah lose the sneakers pal. Kind of a thing. Spring is on. N lawn plan today. Trugreen. Live life outside. Ication is slowing my insides to a crawl. Thats opioidinduced constipation, oic, a different type of im really strugglinglief. Paint a different picture. Talk to your doctor about oic and prescription treatment options. At sur life can be. Oh no this mom didnt have time to worry about a cracked windshield. So she scheduled at safelite. Com and with safelites exclusive on my way text when id be there. So she didnt miss a single shot. cheering crowd windshield. Giving her more time for what matters most. Howd ya do . We won that s another safelite advantage. Thank you so much team sing safelite repair, safelite replace. Heres a look at todays forecast in some cities around a new restaurant has opened in los angeles. It creates special dinners based on the citys most notoriousimes. So you have to be careful if you order an o. J. With your breakfast. Undeed. Well, sony has agreed to pay the estate of Michael Jackson on for its half of their joint Music Publishing venture. Sony atv Music Publishing represents such artists as the ob dylan. Jackson went into business with sony in 1995. Jacksons heirs still own the rights to music he wrote. On the cbs your smartphone may fall short during a personal crisis, and Jerry Seinfeld sells his car collection. Hanna daniels is at the new york stock and more. Good morning. Reporter good morning. A new study looks at how helpful your smartphone is in a health er, not very. Researchers at the university of Californiasan Francisco tested asking them about rape, suicide issues. Answered answers varied widely but included im here for you and i dont know what that means. Ze any concern when a user said im having a heart attack. It was quite a day here on wall street ahead of this weeks Federal Reserve meeting. Ished mixed. The Dow Jones Rose 15. The s p finished 2 points lower, and the nasdaq gained 1 point. Mber toer volkswagen employee claims the german car company deleted documents and obstructedgoing diesel emissions investigation. Daniel donovan in a whistleblower lawsuit says volkswagen fired him after he refused to destroy evidence. Voelgs lkswagen says his claimrit. The lodging website airbnb plans to give neighbors sented a place to offer feedback. The new feature will debut inn japan. Neighbors will be able to visit an online forum to comment and airbnb will take action when Online Retail giant amazon has filed a patent for its selfie pay. Amazon shoppers would be able to authorize a purchase with a f a password. In its patent filing, amazon says facial Recognition Technology is more secure than a. N. Number. And theres a lot more room in Jerry Seinfelds garage, but his wallet is pretty full, too. Of his collectible cars for more than 22 million. He sold 15 porsches one, a 1955 porsche spider worth 5,335,000. Done, it appears the buyer got the bargain. The preauction estimates for all the cars listed was 10 final now i guess jerry can go shopping again. Henna daniels at the new york s a lot. Coming up, shes the mad mom who became an internet sensation. Well hear from angry splash t why she was really so mad. Wait. Perfect. At del monte, peak of freshness with just water and a dash of sea salt. Nothing else. S allnatural and delicious. Northern works so well people can forget their bathroom experience. Just like they forgot conductor randy, who sees all and forgets nothing. At todays forecast in some cities around the country. You used to call me on my cell phone late night rapper drake gets looking for. The big Toronto Raptors fan distracted Justin Holiday long guard to get whistled for a fivesecond violation. Drakes assistance wasnt enough they fall to chicago 109107. Arch to the ncaa tournament is under way. Vanderbilts Mens Basketball Team embarking on their trip to dayton, ohio, for their hup. The first two games are tonight. Florida gulf coast takes on farleigh dickinson. That game is followed by with wichita state. And our coverage of the round of 64 starts on thursday. Duke faces uncwi noon eastern right here on cbs. A scare in spring training for san franciscos newly signed ace, pitcher johnny cueto takesff the head after throwing his first pitch against oakland. Cueto stays in the game, but he was later taken to the hospital a concussion. And it turns out the woman known as the angry splash mountain lady really isnt all that angry. The unsmiling photo of herhe ride went viral. She did it to punk her husband who wouldnt ride with her. Whole way. We got to the last drop, i didnt know where the camera was. So i just guessed and looked over andnd that was that. The syracuse, new york, woman says that shes happy to be grumpy mom on the web along with grumpy cat. This is the cbs morning news. See me. Dont stare at me. See me. See me. See me to know that psoriasis is just something that i have. 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Late show hostt teeing off at the ed sullivan theater last night along with reigning masters champion jordan spieth. Y looks pretty good, but spieths looked like it would have gone right down the fairway at augusta national. Spieth is going to try to become years ago. Our coverage of the masters starts saturday, april 9th, right here on cbs. A newly discovered tinyaurus may have helped the trex evolve into a feared predator. Brooks de la brag ga has reporter when it comes to dinosaurs, they dont get more fearsome. Its really deadly. I like its teeth. Id the chain . At the Smithsonian Museum of natural history,und fossils belonging to a new species of dinosaur that could hold part of the answer. You might call him prerex. Zed dinosaur that Scientists Say is a little predecessor of the tyrannosaurus tyrannosaurus. Dr. Hans seuss was on the dig inthe fossils were found more than a decade ago. Yep. Tyrannosaurus tooth. Ng ct scans, scientists determined that this smaller dinosaur already had the powerful senses of a predator. We were surprised to find out that like trex, it alreadyry sophisticated brain, very keen sense of hearing, good lowfrequency hearing will allow you to detect prey long before the prey has detected discovering those abilities in a 90 millionyearold dinosaur helped scientists understand the evolutionary leap that made the trex possible. Thesee much smarter, much more advanced in terms of their sensory attained the giant size that made them so famous in terms of the public. Reporter a famous dinosaur with a debt to his little s news new york. Coming up after your local news on cbs this morning, decision day as five states votel speak with Ohio Governor john kasich. Plus, spring break out of control. Where police are battling crowds of and actors eugene levy and Catherine Ohara join us in the studio with their new series. Yesterday. Then its creator and star, lynn manuel miranda, was prompted into some Current Events rapping by the president. En. Have a great day. Potus obamacare im looking up before you enacted that federalist papers hamilton wrote the other 51