the clock counting down that half-court shot. >> are you kidding me! >> bring on march madness. good evening, and thank you for joining us on this saturday. i'm cecilia vega. tonight, tensions higher than ever in the race for the white house just days before voters head to the polls. in dayton, ohio, today, this moment of panic at a donald trump rally. secret service agents rushing to his side after a protester tried to rush the stage. it comes after that chaos in chicago, violent clashes between protesters and supporters inside that auditorium. the event abruptly canceled. hundreds of demonstrators outside, too. two police officers injured. and tonight, donald trump taking no responsibility for any of it. the reaction from his rivals on the campaign trail fierce. abc's david wright starts us off kansas city. >> reporter: tonight, tensions on the trail are flaring up. donald trump just finished scolding one protester in dayton, ohio. >> i have to do it myself. >>eporter: when another leapt over the barricade. watch there, as the second protester rushes the podium. the secret service, instinctively flanks the candidate as agents subdue the protester. he's now been booked for disorderly conduct. >> thank you for the warning. i was ready for him. but it's much easier if the cops do it, don't we agree? what a great job. >> reporter: the trump campaign was already on edge today. after the melee last night in chicago. trump haters filtered in the arena. vent on disruption. >> donald trump is not welcome in chicago. we're going to make that clear. >> reporter: trump canceled the rally. provoking a violent reaction from trump supporters. >> all: we want trump! >> reporter: fistfights. today trump didn't back down. calling the protesters thugs and communists. >> some represented bernie our communist friend. or they have organized professionally staged wise guys. we got to fight back. >> reporter: the tensions simmering for months, have reached a boiling point. the rhetoric, increasingly violent. the candidate, sometimes egging on supporters, urging them to take on the protesters. >> i'd like to punch him in the face, i tell ya. knock the crap out of him. would you? seriously. >> donald trump has created a toxic environment, and a toxic environment has allowed his supporters and those who sometimes who seek confrontation to come together in violence. >> reporter: today, marco rubio was asked if he'd still support the gop ticket if trump is the nominee. >> i don't know. it city, missouri, tonight, another big trump rally planned. heavy security inside the venue right now. all calm so far. but outside, the trump supporters and the trump haters are taunting each other. cecilia. >> david wright leading us off tonight. david, thank you. this weekend is crucial in the race for the white house. just three days until major primaries. here's the map, voters head to the polls in five states. hundreds of delegates at stake. tuesday is a make-or-break day for many of those candidates. bernie sanders hoping to win ohio after his upset victory in michigan. and hillary clinton fighting to keep her lead. tonight, both candidates leveling harsh attacks at donald trump. clinton calling his rhetoric, political arson. here's abc's mary bruce in cleveland. >> reporter: after the eruption of violence in chicago, tonight, the democratic candidates in agreement. accusing donald trump of playing with fire. >> the ugly, divisive rhetoric we is not only wrong it's dangerous. if you play with matches you can start a fire you can't control. that's not leadership. it is political arson. >> reporter: bernie sanders is defending his backers seen in those crowds. >> what our supporters are doing is responding to a candidate who has in fact in many ways encouraged violence. >> reporter: but that's where their agreement ends. courting voters in chicago, sanders went after embattled mayor rahm emanuel, calling for clinton to reject his endorsement. >> i think he has done a very bad job. >> reporter: the candidates are making an all-out push. crisscrossing the key states and plastering the air waves. sanders is spending big in the midwest, especially in ohio, where he's hoping to pull off another surprise upset. >> ohio has the opportunity to lead this country forward. >> reporter: clinton is feeling confident in florida where she has a double-digit lead in several polls. >> thank you so much, tampa! >> and mary joins us now. all eyes on ohio before this tuesday primary and now a judge has ruled that some 17-year-olds will be able to cast a vote, so, mary, is the bernie sanders' team hoping this gives them a leg up? >> absolutely, cecilia, 17-year-olds here in ohio will be able to vote in tuesday's primary, so long as they're 18 come general election day in november. this is a big win for bernie sanders who has so far had young voters' support. we want to move on to historic flooding along the gulf. tonight, flash flood watches and warnings in six states and the rivers are still on the rise. in texas, take a look at this, the sabine river cresting. this entire neighborhood under water. in covington, louisiana, were still taking people from their flooded homes today. across the gulf, thousands of families forced to evacuate and abc's phillip mena was there. >> reporter: tonight, the race to shore-up the banks of those rising rivers, from louisiana to tennessee. water up to 2 feet in some parts. more than a thousand homes flooded and more now threatened. >> if not for the sandbags -- >> reporter: the national guard crews rescuing nearly 2100 people over 5 days. hundreds of family pets scooped up, too. here in covington, louisiana, the winter family capturing when the water rushed into their home. they scrambled to save what they could before it was all ruined. >> this is about where it was. so, fortunately, that's the size it got up -- i'm sure it did a lot worse. >> reporter: down the street, robin and her husband caught offguard, too. it went from the ditch into your house in 20 minutes. >> 20 minutes. >> reporter: you didn't have time to throw sandbags in front of your door. the fire department is using trucks like that one and boats. it started around noon today and the rescues haven't stopped. they're trying to pull those still trapped inside their flooded homes to safety. >> phillip, thank you. abc meteorologist indra petersons joins us now. the guflg states are still going to hit tonight? >> only the middle of march, in places like she reeveport, louisiana, setting records. showers still continue to push through that region. tonight, even though they're subsiding, we still have that threat for river flooding for the next several days. to make matters worst, the threat of severe weather through sunday. threat of tornadoes right in that same region. toward the west coast, a series of storms continues to make their way through. powerful system making its way through portland and seattle tonight. the ground there is saturated. sierra, getting a lot of snow. >> thank you. we want to turn to new york's hudson river now, deadly crash on the water. the search still on tonight for two missing crew members. a barge and a tugboat colliding. the entire boat sinking. spilling 5 gallons of oil into the river. one bridge worker did not make it. and to a fiery collision in the west. police investigating what may be a drag race gone wrong. this fireball captured from the skies near seattle. three people injured in the middle of the night. the street in renton notorious for drag races. an overnight riot has a prison still on lockdown. these blurry images apparently taken by inmates. officials say the inmates started that fire and stabbed their warden and a correction officer during the unrest. we have breaking news from new mexico tonight, the man over. late today the second inmate was captured. this man convicted of this armed robbery that ended in a shootout with police. tonight, both he and his accomplice are now back in custody. and the investigation into how they got a way is under way. here's abc's ron claiborne. >> reporter: tonight, lionel clah in custody. after hiding in an apartment hundreds of miles away. >> he literally stepped out the front door, came out and surrendered. he did say to us, he didn't want anybody else to get hurt. >> reporter: they fled wednesday while being transported between prisons. they had been handcuffed and shackled. cruz was arrested friday after being spotted on the street on friday. >> how did you get out of your shackles? >> i picked it. >> reporter: hours after their escape, the two were videotaped by a hotel security camera. cruz said they had no outside help. investigators say they don't believe that. cruz was convicted of a drug-related murder. authorities in new mexico say the circumstances of that double escape is in their words suspicious. they're looking at the possibility of someone from the outside may have helped those two prisoners get away. and also, the possibility of someone from the inside may have helped them. >> thank you, ron. we want to turn overseas to heavy duty air lift involving elephants. more than a dozen of them. pulling off a secret rescue. now the debate over the their transfer intensifying. abc's eva pilgrim with the details. >> reporter: 17 elephants fighting to survive a severe drought are now safely in the u.s. the life-saving mission is now an international mission. carrying them texas. they placed the 10,000 pound elephants on big rigs. >> it's been a long, trying time to get them here. and i am confident in saying that if we did not move these animals here they would not be alive. >> reporter: but it almost didn't happen. an animal rights group asking the court to stop the move but the judge siding with the zoos. the animal rights group saying they had a safe location and money ready to care for the elephants in the wild. instead the zoo secretly shipped them to the u.s. robbing them of their freedom. tonight, zoo officials standing firm saying the move saved the animals who were thin and in danger. jack hanna said the elephants will get top-notch care in their new home. >> i would choose one of these zoos to go tonight. pictures of them eating and drinking, saying the elephants are doing well. eva pilgrim, abc news, new york. we turn now to the buzzer-beater we can't stop watching here. less than a second to go on the clock. uconn and cincinnati and that prayer from half court, march madness bring it on. here's abc's gloria riviera with the shot that will go down in history. >> reporter: the game-winning layup was denied as the huskies refused to lose. in the first overtime the bearcats, again, missing another chance to finish it. cincinnati looking strong in triple overtime. with less than a second to go. boom, kevin johnson hits a three-pointer to seemingly seal the win. >> johnson has hit two! >> reporter: then jalen -- just watch. >> oh, my goodness! >> i'm so happy that shot went in. >> reporter: a 62-foot jumper, welcome to march madness. the freshman guard not even a great three-point shooter this season. but that shot forced a quadruple overtime. the huskies rolled in the fourth overtime, keeping hopes alive they'll have a spot in the ncaa tournament. >> what a shot. there's still much ahead on "world news tonight" this saturday -- caught on camera. airport workers helping themselves to your luggage. the warning for anyone packing for a trip. and she was a real hit at 106 years old. kicking up her heels at the white house, how the birthday girl is celebrating tonight at 107. so, can you guess the song she wants to dance to tonight? this just got interesting. why pause to take a pill? or stop to find a bathroom? 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 long-term 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 ( ♪ ) the roles you play in life are part of what make you, you. and you're not going to let anything keep you sidelined. that's why you drink ensure with nutritious calories, 9 grams of protein and 26 vitamins and minerals. come on, grandma! giving you the strength and energy to get back to doing what you love. from the #1 doctor recommended brand. ensure. always stay you. from the #1 doctor recommended brand. fact. bags at the airport. tonight, the shocking surveillance video, thieves helping themselves to your valuables. their the very people supposed to be keeping your luggage safe. here's abc's marci gonzalez. >> reporter: tonight, police with a renewed warning for travelers. after this. two baggage handlers at orlando international airport caught on camera, stealing right out of suitcases. orlando police say daniel diaz acts as a lookout. the female worker sitting there unaware as a man crawls behind the conveyor belt to conceal a laptop. both men arrested, pleading no contest to the charges. this is far from an isolated incident. in 2014, baggage handlers in los angeles taken away in handcuffs after police claim they stole electronics, jewelry, even clothes. while locks and plastic wrap may not be much of a deterrent to thieves, experts say there are ways to avoid becoming a victim. keep valuables and medications with you when you travel. and opt for inexpensive luggage. >> if you travel with expensive luggage it's probably the one piece of luggage that's going to be targeted more than anything else. the chances of you being targeted goes up dramatically. >> reporter: also, take a photo of your bag after it's packed and before it's zipped. that way if you have to you can prove what was in there. if you do notice something missing from your bug gage, call the police and file a report right away. cecilia. and there's still much more ahead on "world news tonight." when we come back, when things go very, very wrong at work, about 17 floors high, in the windy city, no less. and a tragic turn in alaska. tonight, a late break in the case that took the life of this dog. o you are. woman. or where you're from. city. country. we're just everyday people fighting high blood sugar. ♪ i am everyday people, yea, yea. ♪ farxiga may help in that fight every day. along with diet and exercise, farxiga helps lower blood sugar in adults with type 2 diabetes. one pill a day helps lower your a1c. and, although it's not a weight-loss or blood-pressure drug, farxiga may help you lose weight and may even lower systolic blood pressure when used with metformin. do not take if allergic to farxiga or its ingredients. symptoms of a serious allergic reaction include rash, swelling, or difficulty breathing or swallowing. if you have any of these symptoms stop taking farxiga and seek medical help right away. do not take farxiga if you have severe kidney problems, are on dialysis, or have bladder cancer. tell your doctor right away if you have blood or red color in your urine or pain while you urinate. farxiga can cause serious side effects, including dehydration, genital yeast infections in women and men, urinary tract infections, low blood sugar and kidney problems. stop taking farxiga and call your doctor right away if you have signs of ketoacidosis, which can be serious or life threatening. farxiga. we are everyday people. ♪ i am everyday people, yea, yea. ♪ ask your doctor if farxiga is right for you and visit farxiga.com to learn how you can get it for free. hey, jesse. who are you? 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the answer when we come back. ya know, viagra helps guys get and keep an erection. talk to your doctor about viagra. ask your doctor if your heart is healthy enough for sex. do not take viagra if you take nitrates for chest pain or adempas® for pulmonary hypertension. your blood pressure could drop to an unsafe level. to avoid long-term injury, seek immediate medical help for an erection lasting more than four hours. stop taking viagra and call your doctor right away if you experience a sudden decrease or loss in vision or hearing. ask your doctor about viagra. i use what's already inside me to reach my goals. so i liked when my doctor told me i may reach my blood sugar and a1c goals by activating what's within me. with once-weekly trulicity. trulicity is not insulin. it helps activate my body to do what it's supposed to do release its own insulin. trulicity responds when my blood sugar rises. i take it once a week, and it works 24/7. it comes in an easy-to-use pen and i may even lose a little weight. trulicity is a once-weekly injectable prescription medicine to improve blood sugar in adults with type 2 diabetes. it should be used along with diet and exercise. trulicity is not recommended as the first medicine to treat diabetes and should not be used by people or people with type i diabetes or diabetic ketoacidosis. trulicity is not insulin and has not been studied with long-acting insulin. do not take trulicity if you or anyone in your family has had medullary thyroid cancer or multiple endocrine neoplasia syndrome type 2 or if you are allergic to trulicity or its ingredients. stop using trulicity and call your doctor right away if you have symptoms of an allergic reaction, such as itching, rash, or difficulty breathing; if you have signs of pancreatitis such as severe stomach pain that will not go away and may move to your back, with or without vomiting; or if you have symptoms of thyroid cancer, which may include a lump or swelling in your neck, hoarseness, trouble swallowing, or shortness of breath. medicines like trulicity may cause stomach problems, which could be severe. te your doctor about all your medical conditions and any medicines you take. taking trulicity with a sulfonylurea or insulin may increase your risk for low blood sugar. common side effects include nausea, diarrhea, vomiting, decreased appetite, and indigestion. some side effects can lead to dehydration, which may cause kidney failure. with trulicity, i click to activate what's within me. with a non-insulin option, ask your doctor about once-weekly trulicity. and click to activate your within. okay brace yourself. it's that time again. the spring forward ritual despised by all of us who are so sleep-deprived. tonight, abc's john donvan asks the annual question, why do we have to do this anyway? >> reporter: in this one aspect we are a united america, our uncertainty over this daylight saving thing. >> which way do we turn the clocks? >> backwards? >> um, i think backwards. >> reporter: the answer is that the clock moves forward tonight, one hour, which is the hour of sleep you're going to miss. unless, of course, you live in arizona or hawaii where daylight saving is not observed. lawmakers in some states including california, alaska and rhode the twice-a-year time shift. why do we do this anyway? >> we were sleeping through those summer sunrises. that was considered a waste of resource. >> reporter: during world war i and world war ii, the u.s. went to daylight saving full time to save energy. but some studies today show people drive even more when it's lighter later and some say there are potential health drawbacks. one study in michigan showed that an association between tonight's lost hour of sleep and the jump in heart attacks a day later. still it's how we live, most of us. >> i like the fact that it will be lighter later. >> reporter: if you still find it confusing, at least your phone will have the right time on it tomorrow morning. just keep it charged. john donvan, abc news, washington. don't forget to change those clocks. "good morning america" and "this week" in the morning. i'm cecilia in new york. good night. ♪ ♪ (cell phone rings) where are you? well the squirrels are back in the attic. mom? your dad won't call an exterminator... can i call you back, mom? he says it's personal this time... if you're a mom, you call at the worst time. it's what you do. if you want to save fifteen percent or more on car insurance, you switch to geico. it's what you do. where are you? it's very loud there. are you taking a zumba class? [ applause ] wheel... of... fortune! ladies and gentlemen, here are the stars of america's game -- pat sajak and vanna white. pat: thank you so much! thank you, jim. appreciate that. have a wonderful time at the puzzle board. give my best to the letters. hi. good to see you all. get ready. it's "toss up" time at the old corral. our first "toss up" is a "phrase." it's worth $1,000, and here we go. [ bell chimes ] janet.