welcome to "world news tonight." critics calling ing ing donald trump the fire starter. protests, punches, now finger pointing.

day on tuesday. the sprint starts now. >> breaking news, a pair of deadly terror attacks. the explosion ripping through a major capital city. gunmen storming a popular beach resort. severe storms, weather alerts alerts. and a tornado threat for millions as we come on the air. super bug. tiny new weapon in the fight against the zika outbreak. the radical new step scientists are now taking. jam session. a man accused of jamming cell phones. now facing charges. and the big question tonight, is your cell phone safe? good evening, thanks for

i'm tom llamas. we begin with the potential do or die showdown just two days away. donald trump in an actual battle at his rallies. chaos erupting in kansas city saturday night, police using pepper spray on demonstrators. and tuesday, voting in five states, ohio, john kasich out front, with 39%, followed by trump and cruz. rubio urging his supporters to back kasich. and david wright starts us off tonight. >> it's just tear gas. >> reporter: forget occupy wall street, these days, it's more like occupy donald trump. >> get him out of here. get him out. send him back to bernie.

>> reporter: the latest example, today in blom ing omington, illinois. >> troublemakers. they're disrun p rupt disruptors, not protesters. >> reporter: police used horses for crowd control, then pepper spray. i have a mouthful of pepper spray. trump blamed bernie sanders for the disruptions. and he's right, these are mostly sanders supporters. but that's not to say that the sanders campaign sent them. tensions have been growing. in dayton, ohio, a lone protester rushed the podium, scaring trump and the secret service. and later, he claimed this guy

>> all i know is what's on the internet. >> reporter: while trump says he doesn't condone violence, remember the guy that sucker-punched a guy in north carolina? trump says he's considering paying for his legal fees. >> if donald is the nominee, it makes it much more likely that general. >> reporter: and all quiet so far in florida. trump calls it his second home. hoping to snatch it away from marco rubio on tuesday. >> thanks. and let's go to jonathan karl. how does this affect the voting in the big states on tuesday? >> in the short run, i don't

his supporters are probably going to rally to his side, and a lot of people have already voted in those big states. in ohio, they've been voting since the middle of february. but in the long run, it could hurt trump, because he needs to unite republicans and eventually the entire country. this isn't going in the right direction. and hillary clinton, trying to wrap up the democratic nomination with a big win on tuesday. and the closest fight in illinois, 51-45. and mary bruce on the campaign trail. >> reporter: tonight, bernie sanders is crying foul.

supporters for the chaos at his rallies. >> tells the truth very, very rarely. and i'm afraid he's lying again. >> reporter: and he's pointing the finger back to trump. donald trump is now threatening to send his supporters to bernie sanders' rallies in an act of retaliation. a handful showed up in st. louis. and in columbus, a different take. your message? >> feel the bern. >> reporter: as they battle it out in five states on tuesday. and hillary clinton made her final pitch, taking a jab at sanders. >> it's not enough if you want be president, to tell people what you're against. >> reporter: saturday night live poked fun at the challenges she

>> i'm sick and tired of hearing about my own damn e-mails! >> and i've got supporters of all ages, 18-year-olds, 19-year-olds. >> reporter: and bernie sanders has been spending a lot of time in ohio, where he says he feels the momentum heading into tuesday. but according to the polls, hillary clinton still holds the lead. tom? >> thank you. and stay with abc news for primary results throughout the night on tuesday. we want to move on to breaking news from prince georges county, maryland. an officer, shot outside of a place station. and our affiliate reporting one suspect taken into custody. and we're following breaking

two separate terrorist attacks. turkey, a huge explosion, the blast reportedly from a car bomb in the capital. and in west africa, al qaeda claiming responsibility for a deadly assault. alex marquardt with the new aim images coming in. >> reporter: a bloody sunday on two continents. an explosion ripping through an area next to a bus stop and government buildings. the dead and wounded carried away. more than 30 killed. the u.s. state department had warned of a potential attack. the fourth to hit turkey in six months, blamed on the kurds and isis.

terrorists had stormed a beach in the ivory coast. security forces quickly surrounded the area. and the government said 16 people were killed, in addition to 6 attackers, believed to be from the al qaeda affiliate in afternoon africa, after they claimed responsibility. the free quency of the global terror attacks is growing. intelligence officials say the question is not if, but when about the next terrorist attack. and 5 million people facing a severe weather threat that could include tornadoes. nearly 5,000 homes damaged in louisiana. phillip mena in the flood zone tonight.

the south working to hold back the swollen rivers. in this louisiana neighborhood, families who were rescued by boat this weekend returning home to see the damage. we were with the engelhart family yesterday. >> it didn't matter that my house was destroyed as long as my family was safe. >> reporter: their home was spared. but this house was damaged by flooding. >> we knew it was over. we knew it was coming in the house. >> reporter: roadways under water. debris, floating among the submerged homes. and tonight, a new worry -- dangerous mold. the baseboards and saturated drywall coming out.

getting the mold is our biggest concern. we want to get it taken care of. >> reporter: obviously, the skies have cleared up here. but just north of here, severe weather is on the move. many bracing for dangerous storms tonight. tom? >> phillip, thank you. let's go to indra petersons. >> you can see tornado watches out there for eastern portions of oklahoma and louisiana. looking for fast-moving cells, that could take people off-guard overnight. and it's not the only place getting hit hard. in the pacific northwest, series of storms moving through.

without power. and they do need the snow in the sierras sierras, so hopefully putting a dent in the drought situations. and moving on to zika, 193 cases in 31 states. eva pilgrim with the radical new way to fight zika. >> reporter: tonight, a potential new weapon in the fight against zika. using mosquitoes to help stop its spread. scientists releasing genetically modified mosquitoes. and in brazil, scientists are already using these mosquitoes. dr. richard besser saw them firsthand in february.

mosquitoes genetically modified every week. >> reporter: and the cdc warning that zika could spread in the united states by june. and while the experiment has proven successful in brazil, not everyone is pleased. >> when you open this pandora box, there's no saying it will be successful. >> reporter: and they're taking comments before the final tom? >> thank you. and a record number of travelers as spring break approaches. but right now, some wait times at airports reaching two hours. here's gloria riviera with what you need to know.

america, airport security lines at a breaking point. caused by tsa shortages, and a record number of spring break travelers. >> missed my flight. >> reporter: the tsa normally screens 2 million passengers every day. but that skyrockets during sfring spring break. they're projecting 140 million passengers will fly on u.s. airlines. that means at least 300,000 more people lining up every day in the security line. and the tsa turning out more than 200 new employees every day. but some tips, check delay tommy

>> fly on a saturday or sunday morning. >> reporter: and use social media. tweet the airline, and most have rapid response helpers to help solve your problem. and a device that causes cell phone calls to drop. and later, the dog that beat cutting edge technology. how he saved his little owner's life by detecting that trouble was on the way. to prove to you that the better choice for him is aleve. he's agreed to give it up. ok, but i have 30 acres to cover by sundown. we'll be with him all day as he goes back to taking tylenol. yeah, i was ok, but after lunch my knee started hurting again so... more pills. yep... another pill stop. can i get my aleve back yet? for my pain... i want my aleve. get all day minor arthritis pain relief

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commuters have been there. looking for peace and quiet, only to be interrupted by cell phone calls. and police say this man allegedly used this device to block phone calls. tonight, he's facing a charge of interfering with a public utility utility. >> he's been a good member of the community, and had no malicious intent to hurt anybody. >> reporter: the devices jam the signal. using them is against the law. >> this gadget is illegal to use. i'm not using it, just reviewing it. >> reporter: still, they're easy to find online. this man, suspended for using a

put phones down. this priest installing a jammer in church to keep his mass quiet. the lawyer for the man in chicago has yet to file a plea. tom, cell phone jammers can disrupt police communications and emergency calls. new concerns over a popular electric car. and later, why one fisherman has bragging rights. the big catch, coming up. and why stop to find a bathroom? cialis for daily use, is the only daily tablet approved to treat erectile dysfunction so you can be ready anytime the moment is right. r plus cialis treats the frustratingpurinary 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. p do not take cialis if you take

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and it ricocheted, injuring them. none of the injuries life-threatening. and nissan is recalling some of its leaf electric cars. they need their computer systems reprogrammed. and a fisherman, reeling in a great white shark. he said it looked like a submarine with a tail on it. and the story of luke and a dog named jedi. how he saved his owner's life late one night.

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or joint pain, less appetite, chills, or rash. get this one done. ask your doctor or pharmacist about prevnar 13 today. finally tonight, an incredible story of nature beating technology. a black lab named jedi, devoted to his master luke. here's john donvan >> reporter: jedi has an acute sense of smell, but it's his sense of timing, spreading this picture over facebook. luke is 7, diagnosed with a chronic condition.

diabetes, he needs to go to the hospital now. >> reporter: the other night, the whole family was asleep, luke's blood sugar dropped, and jedi sounded the alarm. jedi has been trained to smell when luke's levels go too slow. >> he's really special to me, because he always knows, his nose can sniff where i am. >> he laid on me. and then i went, oh, no, i think i have to get up and check luke. i think there's an issue. >> reporter: sure enough, luke was able to get his shot. good timing, good training, and also friendship for real. >> he's my first, best friend. >> reporter: john donvan, abc news, washington. >> we thank you for watching. "gma" first thing in the

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