Nightly news begins right now. Announcer from nbc news World Headquarters in new york, this is nbc nightly news with lester holt. Good evening. We start with a rare, uncomfortable, and maybe enlightening moment on the campaign trail when ted cruz went toe to toe with some diehard donald Trump Supporters. Cruz, a heavy underdog for the republican nomination, is playing the long game, in an effort to force a contested convention and remain a contender. Cruz has pulled out the stops in indiana, site of tomorrows primary. Nbcs Halle Jackson is there. Reporte sir, you are entitled to have your rights. America is a better country without you. Reporter confronting donald Trump Supporters in indiana. Do the masmt. Drop out. Its your turn. Take your own words. Reporter Ted Cruz Making his case. The question that everyone here should ask are you canadian . Do you want your kids repeating the words of donald trump . Reporter later, leaving the protest. There are five of them and hundreds of us. So no. Do you think you have the numbers here based on that interaction . Its up to the voters. Reporter right now, nbcs newest indiana poll shows the texas senator trailing trump by 15 points. Cruz Campaign Aides privately telling us they believe the race is much tighter, which is why cruz is going all out all over the hoosier state, make or break for him. We are in for the distance. We are competing, as long as we have a viable path to victory, i am in to the end. What is a viable path . Nobodys going to get to 1,237. Indiana is very important, because if i win, thats the end of it. Reporter not quite. He would need california to lock it up. But a win here puts him on a glide path. Trump today teasing cruz after his running mates misstep right off the stage. Even i would have helped her, okay . She just went down. She went down a long way, right . Reporter even cruzs supporters in other states seems to be slipping. I think that at this point, trump represents the mood of the country. Reporter the gop now coming to grips with what could be the new normal. Adjusting to the idea of trump possibly as the nominee, as he picks up support tonight from notre dame coach lou holt. To some hoosiers, thats a bigger deal than the governors endorsement of ted cruz, both set to appear here tonight ahead of tomorrows critical primary. Hallie, thank you. On the heels of deadly flooding in the south this weekend, the same violent weather system is on the move right now, bearing down now on the midatlantic. Severe thunderstorm watches are up tonight across parts of at least six states. In the storms wake, seven people are already dead and some hardhit communities remain under threat. Nbcs Miguel Almaguer reports from louisiana. Reporter misery and mayhem as this punishing storm moves east. Powerful downpours after a weekend washout. A new round of thunderstorms putting 4 million under a flash flood watch. A region with no time to recover, from deadly floods, tornadoes, and hail. Near lake charles, louisiana, a deluge. In one day, nearly 10 inches of rain. Cars washed down roads. This one trapped under a foot bridge. All of it leaving homeowners mopping up more than a foot of water. It was bad. There was nothing to do but sit there and watch. Reporter the storm system that punished louisiana was deadly in the town of palestine, texas. A wall of water came so fast, Linda Ashbury tried to carry her four great grandchildren to safety. But there was no escape. The young family was washed away. They say she was trying. And the waters got too strong for her, and she said she couldnt take it no more, and washed them along. Reporter in owen county, kentucky, a man was killed when floodwaters swept away his truck. Oh, my god reporter in lynndale, texas, roads and cars washed away. I just moved just in time reporter it happened while tornadoes destroyed businesses and homes. But tonight, its the rain. 14 million are in the path of severe weather. The south getting battered and hammered again. Tonight as this area tries to dry out, some 4 Million People all across this region remain under a Flash Flood Warning tonight. They also worried about the rivers here that are expected to crest above flood stage. For those that have been hit hard, yet another worry for them again tonight. Miguel almaguer, thank you. The stage is set for what could be a major family drama with the fortune left behind by prince. Many troubling questions remain over why and how the superstar died. Stephanie gosk now with late details. Reporter concerns growing prescription painkillers may have played a role in princes death, today arsenio hall said he knew his friend was in pain. I was aware of hip pain. Correct. That he had. There was a point that he was having some pain. I never talked about that kind of thing. Reporter meanwhile, in minnesota, princes siblings pushed through a mob of media to get into the courthou courthouse. The first step in dividing the musicians fortune. The proceedings lasted just ten minutes. The pop stars sister and five half siblings are the only known heirs. The joudge confirmed today no will has been found. These can be some of the ugliest fights you can see in probate court. People are throwing around all sorts of dirty laundry, all aired out for the public to see. Reporter princes estate is estimated to be worth around 300 million, and it will likely grow. On top of new music sales, there is a treasure trove of unreleased tracks. And prince invested heavily in local real estate. Owning at least 16 Different Properties in the minneapolis area worth close to 30 million. While the family tries to unravel the finances, the mystery of princes death only deepens. Law enforcement sources say prescription painkillers were found on princes body, and in paisley park. Finding out what role they may have played, if any, and who prescribed them, is at the heart of the ongoing investigation. Today in probate court, the judge said were not used to this kind of notoriety here in carver county, minnesota. But they may have to get used to it. This process could take years, lester. Stephanie gosk tonight, thank you. There was no school for tens of thousands of kids in detroit today. A massive sickout among teachers of the possibility they wont be paid past the end of june as the struggling School District runs out of money. The emergency manager for detroit Public Schools said they just dont have the cash to pay the teachers unless they get an infusion of funding from the state. Now to whats being called the perfect storm over the zika virus. Late today, puerto rico, home to nearly 4 million americans, defaulted on its largest debt payment so far. There are fears that the money crisis could have an explosive effect on the zika outbreak there. Nbcs Gabe Gutierrez is in puerto rico with more. Reporter doctor Gloria Rodriguez vega is on the front lines of the battle against zika. I have commitment. Reporter puerto ricos growing financial crisis has forced her Hospital Group to lay off nearly 500 employees. Even as she and her colleagues are seeing more zika related cases. We have a financial crisis at this point. Its a humanitarian crisis, its a health crisis. Reporter today the island defaulted on its largest debt payment yet. Other hospitals are in danger of closing. Is this the perfect storm . Yes, it is, definitely. Reporter dr. Diana otero said resources are already stretched thin and its tough to get lab tests done. Since november, there have been more than 700 confirmed zika cases in puerto rico, 89 of them pregnant women. 43yearold Jose Gonzalez just returned to work a month after be i being sick with zika. Very heavy cramps on the legs, arms. Reporter the cdc now racing to develop a better test for zika. We will have more and more cases. And its just a very hard virus to stop. Reporter tonight the u. S. Commonwealth is hoping zika doesnt scare away tourists this summer. Steepening a financial crisis with no end in sight. Gabe gutierrez, nbc news. The brewing coffee controversy at starbucks. The target of a lawsuit which claims the company has been shortchanging its customers by overfilling their ice drinks with ice, and not enough of the actual beverage. Tom costello has details on this court battle. Reporter no stranger to controversy, coffee giant starbucks is now the target of a lawsuit in which a customer in illinois accused the starbucks of false and misleading marketing and sale of cold drinks. That starbucks has engaged in the practice of misrepresenting the amount of cold drink a customer will receive. At issue, whether customers get more ice than drink when they order an iced coffee. In chicago, the woman is seeking 5 million in damages. Outside a maryland starbucks today, mostly skeptical reviews. I think its a familiar one. What else are we going to sue people for. What has the world come to. Reporter the suit includes a photo of a starbucks cup and claims the black lines on the cup are meant to guide baristas across the country in how much liquid to use. While it advertises 24 fluid ounces on the menu, customers may only get 14 ounces. In a statement the company says our customers understand and expect that ice is an essential component of any iced beverage. If a customer is not satisfied with their beverage preparation, we will gladly remake it. Only a few weeks ago, starbucks was accused of leaving too much room for foam in its drinks. The company said thats without merit. Now a customer apparently unsatisfied has decided that instead of going to a barista to get her drink remade, she is suing for 5 million. Lester . All right, tom costello, thanks. History has been made once again in cuba, where the first cruise ship from the u. S. In nearly four decades has docked in ha van a. The latest sign of the thawing relationship between the two countries after more than a half century of mistrust. Nbcs Kerry Sanders was onboard that ship and reports tonight from havana. Reporter early this morning, what was once unthinkable. For the first time in more than 40 years, a u. S. Cruise ship entered communist cuba, docking at the port of havana. Were making history. Ive wanted to come here my entire life. My parents were born here. Reporter tonight the american passengers touching cuban soil here, technically not tourists. Instead these are peopletopeople exchanges, and boy do these americans get a peopletopeople welcome here. Crying like a baby. The greatest thing in the world. What do you think of americans coming here . Its great. Reporter last august president obama reestablished diplomatic relations with this nation, when the ship left miami a small protest. Some cubanamericans dont agree with the shift in policy. Its predicted as many as 700,000 americans could visit cuba in the coming year. To taste the culture, and engage with the cuban people. Do you feel youve gotten here before it changes . I hope so. Reporter cuba now only a cruise away, and soon at least ten u. S. Airlines hope regularly scheduled flights for all americans, to a caribbean island that for so long was forbidden fruit. Kerry sanders, nbc news, havana. Still ahead here tonight, fighting insomnia. If youre one of millions of americans who toss and turn in bed, what experts now say you should be doing to get a better nights sleep without taking a pill. Malia obama is heading off to college, but not right away. Is t cat meows flea bites can mean misery for your cat. Advantage® ii monthly topical kills fleas through contact. Fleas do not have to bite your cat to die. Advantage® ii. Fight the misery of biting fleas. This just got interesting. Why pause to take a pill . Or stop to find a bathroom . Cialis for daily use is approved to treat both erectile dysfunction and the urinary symptoms of bph, like needing to go frequently, day or night. Tell your doctor about all your medical conditions and medicines, and ask if your heart is healthy enough for sex do not take cialis if you take nitrates for chest pain, or adempas for pulmonary hypertension, as it may cause an unsafe drop in blood pressure. Do not drink alcohol in excess. Side effects may include headache, upset stomach, delayed backache or muscle ache. To avoid longterm injury, get medical help right away for an erection lasting more than four hours. If you have any sudden decrease or loss in hearing or vision, or any symptoms of an allergic reaction, stop taking cialis and get medical help right away. Ask your doctor about cialis and a 200 savings card were back now with news for the tens of millions who are sleepless in america. Perhaps youre one of them. If youre not, chances are a loved one is. You know who are tossing and turning and watching the minutes tick by. Doctors are out with new advice to help you get some sleep before reaching for the pills. Rehema ellis explains. Reporter like clockwork, when the sun goes down, millions of americans dont. From los angeles sometimes i lie awake for a long time. Reporter to chicago, to new york. What keeps you up at night . Kids, work, family. Life. Obligations. Reporter researchers say about 40 Million People are sleepless in america. 10 have chronic insomnia. Trouble sleeping three nights every week for a month or more. But new guidelines from the American College of physicians today tell insomniacs, dont take a pill, first try changing your behavior. The evidence is quite strong that Cognitive Behavioral Therapy is effective, it works, its longlasting. Its not invasive. You dont face the serious side effects of sleep medications. Reporter these new recommendations include dont nap. It interferes with the regular bedtime. Eliminate distractions. Especially electronics. If youre still awake after 20 minutes, dont lie there, get out of bed. Read a boring book until you start feeling drowsy, and then get back into bed and attempt to sleep again. Im able to fall asleep because of simple nervousness or restlessness. Reporter a bad nights sleep not only leaves you tired, it increases your risks of heart disease, diabetes and obesity. If youre not getting the recommended seven to nine hours of sleep a night, there are ways to quiet your mind, without popping a pill. Rehema ellis, nbc news, new york. Were back in a moment with the race of a lifetime, and a new world record. Whoa. Whats going on here . Oh hey allison. Im val, the orange money retirement squirrel from voya. Val from voya . Yeah, val from voya. Quick question, what are voya retirement squirrels doing in my house . Were putting away acorns. You know, to show the importance of saving for the future. So youre sort of like a Spokes Person . No, im more like a metaphor. Okay, a spokesmetaphor. No, im. Youre a spokesmetaphor. Yeah. Ok. See how voya can help you get organized at voya. Com. Im bushed ive been on my feel alyea me too. Excuse me. Coming through ride the gel wave of comfort with dr. Scholls massaging gel insoles. Theyre proven to give you comfort. Which helps you feel more energized. All day long. I want what he has. And if you have afib an irregular heartbeatls. That may put you at five times greater risk of stroke they can pool together in the heart, forming a clot that can break free, and travel upstream to the brain where it can block blood flow and cause a stroke. But if you have afib thats not caused by a heart valve problem, pradaxa can help stop clots from forming. Pradaxa was better than warfarin at reducing the risk of stroke, in a Clinical Trial without the need for regular blood tests. And, in the rare event of an emergency, pradaxa is the only oral blood thinner other than warfarin with a specific reversal treatment to help your body clot normally again. Pradaxa is not for people who have had a heart valve replacement. Dont stop taking pradaxa without talking to your doctor. Stopping increases your risk of stroke or blood clots. Ask your doctor if you need to stop pradaxa before any planned medical or dental procedure. Pradaxa can cause serious, and sometimes, fatal bleeding. Dont take pradaxa if you have abnormal bleeding. And seek immediate medical care for unexpected signs of bleeding, like unusual bruising. Pradaxa may increase your bleeding risk if youre 75 or older, have kidney problems, stomach ulcers, a bleeding condition, or take certain medicines. Side effects with pradaxa can include indigestion, stomach pain, upset or burning. Go with pradaxa, the only blood thinner that lowers your stroke risk better than warfarin and has a specific reversal treatment. Eligible patients could pay as little as zero dollars on copay. Ask your doctor about pradaxa today. Try phillips fiber good gummies plus energy support. Its a new fiber supplement that helps support regularity and includes b vitamins to help convert food to energy. Mmmmm, these are good nice work, phillips the tasty side of fiber, from phillips. Like so many parents, the president and first lady will soon watch one of their daughters graduate high school. But while first daughter malia obama has secured a spot at harvard, she wont be attending right away. Nbcs Kristen Welker reports on malia taking a socalled gap year, and why more colleges are warming up to the idea. Reporter the world has watched her grow up. The older daughter of the nations 44th president. But now malia obama is charting her own course, heading to Harvard University in 2017. Her usually stoic father acknowledging how much hell miss her. Im not ready for her to leave. Reporter its what malia is doing next year that has everyone else talking. Shes taking time off better starting college. The white house mum about malias plans. The first lady telling us during a 2011 trip, theyve always tried to shield their girls. Our overall goal is to make sure that our girls are not in the public eye. I think shes looking to really hit the pause button. She has the luxury to be able to do that. Reporter gap years are popular in europe and australia. Everyone from Prince William to hugh jackman taking one. But here in the u. S. , less than 1 of High School Seniors do. And theyre mainly from upper income families. But now some colleges are offering Financial Aid to students who would like to travel or volunteer. The colleges like it. They like having older kids in the classroom. It brings a wider variety of world experience and perspective. Reporter for malia, it will give her a chance to start her studies without the harsh glare of her father being in office. Still, mixed emotions. Shes one of my best friends. Its going to be hard for me not to have her around all the time. Reporter now, from a family of firsts, malia can make her own mark. Kristen welker, nbc news. Now, to a run for the ages in philadelphia. Take a look at 100yearold ida keeling running in a 100meter dash. Shuffling down the track at 1 17 and setting a new world record for a woman 100 years or older. The crowd went wild. And afterwards, ida did some pushups to celebrate. Her advice to herself, love yourself, and do what you have to do, and what you want to do, eat for nutrition, not for taste, and exercise at least once a day. Thats a lady you want to listen to. When we come back, the creative idea cooked up by one dad thats drawing smiles when my doctor told me i have agerelated macular degeneration, amd we came up with a plan to help reduce my risk of progression. And everywhere i look. Im reminded to stick to my plan. Including Preservision Areds 2. My doctor said Preservision Areds 2 has the exact nutrient formula that the National Eye Institute recommends to help reduce the risk of progression of moderate to advanced amd. After 15 years of clinical studies. Preservision areds 2. Because my eyes are everything. Her long day as anne. Hair stylist starts with shoulder pain when. Hey joanne, want to trade the all day relief of 2 aleve with 6 tylenol . Give up my 2 aleve for 6 tylenol . No thanks. For me. Its aleve. The sunll come out for people with Heart Failure, tomorrow is not a given. But entresto is a medicine that helps make more tomorrows possible. Tomorrow, tomorrow. I love ya, tomorrow in the largest Heart Failure study ever. Entresto helped more people stay alive and out of the hospital than a leading Heart Failure medicine. Women who are pregnant must not take entresto. It can cause harm or death to an unborn baby. Dont take entresto with an ace inhibitor or aliskiren. If youve had angioedema while taking an ace or arb medicine, dont take entresto. The most serious side effects are angioedema, low blood pressure. Kidney problems, or high potassium in your blood. Tomorrow, tomorrow i love ya, tomorrow. Ask your heart doctor about entresto. And help make tomorrow possible. Youre only a day away finally tonight, a story about what you can achieve when you color outside the lines. It started when a dad realized a lot of free crayons at Family Restaurants end up in the trash. And it gave him an idea thats now brightening the lives of so many kids. Nbcs gati schwartz has tonights making a difference report. Reporter in this kitchen, theres no recipe for what brian ware is cooking, because what hes cooking isnt dinner. We take the assorted crayons, melt it down. Some of the paper is coming off here. It almost looks like spaghetti. Yes. Reporter he calls it his crayon initiative. Using what looks kind of like a waffle maker that he designed. This living room den has turned into crayon storage. Youve got boxes and boxes of all of these crayons. Check this out, in the time weve been here, right here on the front porch, more deliveries. Reporter at a Community Event this week, 100 volunteers gathered to help. Go back through them. Reporter and once packaged, theyll send them to local hospitals. This girl is recovering from spinal surgery and coloring helps her forget the pain. Its a place where i get to escape from everything, and really focus on just coloring. Sometimes some of my medical stuff, it really stresses me out. So i try to keep my mind off it. Reporter 11yearold jayden likes to let her imagination go when she colors. When you color, what kind of things do you think about . Nothing. Thats exactly why i color. Your brain just shuts off when you color. It provides them the ability to be whatever they want to be. Dream whatever they want to be. That right there is why we do this. Reporter one fathers simple idea turning unwanted crayons into unlimited possibilities. Gadi schwartz, nbc news, oakland, california. Thats going to do it for us on a monday night. Im lester holt. For all of us at nbc news, thank u for yo obama drops the mic. Roasting trump. Cracking kardashian jokes. Were inside with all the star collisions, now on extra. Comedian in chief. Is this dinner too tacky for the donald . The president gets in his last laugh at the white house correspondents dinner. We wanted to come tonight. From will and jada, to a secretly pregnant Kerry Washington . Kendall jenner to the donald jr. Wheres your dad . A. J. Has all the moments you didnt see. Princes brother sits down with extra as the money battle erupts in court today. Is there any feuding amongst the family . Plus, the mystery star who gave the family 20 grand to cover the bills. Then, spoiler alert. Game of thrones jon snow is alive. Why kit harringtons apologizing to the fans today. Then my fourth outfit change. Because, why not . Carrie underwoods fashion marathon as nashville invades l. A. And gwen stefani breaks news about her first song with blake. Its a shock. Say hello to my little friend. Extra wins the 2016 emmy for outstandg