dangerous summer. and pool shock. the hidden danger. two holiday swimmers seriously europed after an apparent electric shock. what you can do to make sure this doesn't happen to you or your family. good evening. i'm tom llamas, in for david. thanks for joining us on this mow more y'all day. we begin with deadly flooding in the south, and torrential downpours effecting the holiday up and down the east coast. at least six people are dead in texas and kansas. flash flooding prompting evacuations and water rescues. officials keeping a close eye on the brazos river, still rising at this hour. and in colorado, a tornado near the nebraska border. tonight, several thunderstorm watches in effect in the plains. and in the east, remnants of tropical storm bonnie bringing drenching rains so heavy in south carolina that parts of i-95 had a to tempo abc's eva pilgrim gets us started tonight from south carolina. >> reporter: tonight, new evacuations in texas. the colorado river four feet above flood stage and still rising. winford williams and his family evacuating for the second time in two months. >> nothing you can do but go stay in the hotel. >> reporter: helicopters rescuing people north of houston this weekend. severe storms pummelling the lone star state. six dead and two still missing in the region, including a 10-year-old boy who fell in the river while fishing. >> it's frustrating we have the family here and they need some closure and we haven't been able to get it to them yet. >> reporter: meanwhile, in the east, millions dealing with remnants of tropical storm bonnie, dumping eight inches of rain in south carolina. partal of interstate 95 shut down. >> i've never seen the water this high. >> reporter: storms flooding roads all the way to new york city. on the beaches and urgent warning. >> looks can be deceiving. yes, it's calm out right now, but people take the water for the water is a very dangerous police. >> reporter: rip doesn'ts, an invisible threat. lifeguards rescuing some neerl is a savannah, georgia. if you find yourself in a rip current, the key is to stay calm. once it dumps you out, then swim parallel to the shore. the threat for rip currents continues tonight across portions of the southeast from florida all the way to north carolina. tom? >> eva wipilgrim, thank you. and for more, i want to bring in ginger zee. >> reporter: tom, tonight, we've got severe thunderstorms already popping up on the map. i want to bring you straight there. from you colorado through kansas, nebraska, south dakota, north carolina, parts of minnesota, a severe thunderstorm watch for the next couple of hours. so, if you have outdoor activities going on now and you're in that region, please, be aware. already, nearly 30 severe storms reported. then, check this out. the rainfall forecast for areas that the not need more to three inches. tulsa, oklahoma, there. the remnants of bonnie, we've been talking about it. just showers from now, but a plum of moisture going to sweep all out. much droier into tuesday. >> ginger, thank you. now, to the growing outrage after a 4-year-old boy slipped into a gorilla enclosure and the desperate decision to kill the animal. the shocking incident caught on camera. the gorilla and boy face to face for several minutes before the 400-pound silverback was shot. tonight, officials defending their actions amid anger and an outpouring of support for the animal. here's abc's marci gonzalez. we want to warn you, you might find some of these images graphic. >> reporter: tonight, growing outrage about this close encounter. those ten terrifying minutes the child spent inside the zoo exhibit, causing the endangered silverback to lose his life. >> oh, my god! oh >> reporter: the horrifying scene playing out in front of the boy's mother. >> mommy loves you! i'm right here. >> reporter: at one point, 17-year-old harambe and the 4-year-old boy appear to look at each other. >> be calm, be calm. >> reporter: then, the gorilla lifts the boy up and drags him to the other side of the moat. zoo officials making the split-second decision to take the gorilla's life. >> my heart sank. you could tell it was a high powered rifle. >> reporter: authorities say it started when the boy crawled over the barrier, plunging into the moat. this video of the of the exhibit from 2014 shows the three-foot high railing that separates the crowd from the exhibit. the same one that's been there for 38 years. >> the exhibit is safe and the barrier's safe. that said, any of us in this room could climb over barriers if we choose. >> reporter: mourners today 408ding a vigil for the gorilla, as anger over his death grows. some pointing to videos like this, showing a gorilla in an illinois zoo in 1996 carry her enclosure to zoo keepers for help, saying gorillas can be protective. the zoo tonight, defending its decision to shoot the animal. >> that child's life was in we stand by our decision. we'd make the same call today. >> reporter: tonight, the boy is home from the hospital, but online, calls for his parents to be held accountable. the boy's mother saying in a now deleted facebook post, "as a society, we are quick to judge how a parent could take their eyes off of their child. accidents happen, but i am thankful that the right people were in the right place." and cincinnati police tell abc news they are not filing charges. the zoo's director tells me, they are now reviewing ways to make the gorilla exit safer. tom? >> so many people talking about this story. already, marci, thank you. next, to houston, and breaking developments tonight in that wild shootout that left two dead including the gunman and six wounded. abc houston station ktrk confirming tonight that 25-year-old veteran garza is the suspect. california, had four tours in afghanistan. here's abc's phillip mena. >> reporter: tonight, new images of that deadly houston shootout. the gas station erupting in flames. the chaos captured during the gunman's rampage. >> the shooter was shooting so much at that gas station area, that the gas station started blowing up. >> reporter: hour houston station ktra now identifying the killer as dionisio garza, an army veteran with four towns in afghanistan. his motive is unknown. the shooting spree began sunday. the gunman went into this auto detail shop, killing a customer. he then used a high powered assault weapon to spray shots around the neighborhood. the shooter even taking aim at a police helicopter, hitting it several times. police yelling for residents to take cover. >> get in your house. >> reporter: this cruiser riddled with an astounding 21 bullets. two officers wounded, four others shot. >> when i had turned around, that's when i noticed that he, luke, really tried to aim for my car. >> reporter: tonight, we know both officers who were shot have been released from the hospital. but at least one person, that good samaritan, remains hospitalized. tom? >> phillip mena tonight, thank you. and it has been a weekend of gun violence in chicago. at least four people killed, 50 more hurt during shootings across the city. among the four fatalities, 15-year-old veronica lopez, a passenger in a car when a second vehicle pulled alongside, a gunman opening fire. lopez later died at the hospital. now, to the long trip home for millions of americans celebrating the holiday weekend away. a computer glitch at new york city's jfk airport causing massive delays. airlines forced to manually check in travelers. and wet weather in the south and the east coast complicating the trip home for 34 million americans driving this weekend. here's abc's linsey davis with headaches. >> reporter: slow going tonight on america's highways and skyways, as roughly 38 million travelers make their way home on this potentially record-breaking memorial day. >> we are very glad we left early, so we don't have to sit in the traffic tonight. >> reporter: it's estimated this will be the biggest travel weekend since 2005. fueled by gas prices that haven't been this low on memorial day in 11 years. the national average today? $2.30 a gallon. 47 cents lower than a year ago. heavy traffic like this is the downside of paying less at the pump. some travel nightmares at the nation's airports, too. passengers at chicago's o'hare blamed the tsa for long delays. >> there's a fire truck. >> reporter: in tampa, a united flight caught fire. and at new york's jfk airport, a computer glitch caused massive delays overnight, at 1,000z passengers were checked in manually. >> i've never seen anything like this before. never. >> reporter: according to the to travel on a busy day like this is in the morning, and the worst time is between 1:00 and 4:00 p.m. tom? >> linsey davis, who made it home tonight. thank you. next tonight, the race for 2016, and a massive showdown looming for the democrats. hillary clinton today marching in a memorial day parade in new york, but it's the california primary, and a surging bernie sanders that had one top supporter delivers a strong message for clinton's opponent. this, as donald trump prepares to face reporters to explain just what he's done for vets. here's abc's mary bruce. >> reporter: today, a memorial day tradition. bill and hillary clinton marching in their hometown parade in chappaqua, new york. >> i love it. i love being here. >> reporter: but bernie sanders, instead, going where the votes are, making a surprise appearance in san francisco. california, once considered clinton country, now a tossup. and clinton today is announcing new events in the state, as one of her top califor urges sanders to face the facts. >> he ought to be able to read the sign posts, as well as anybody else. and if he did that, he would know that it's all but over. >> reporter: meanwhile, donald trump marking memorial day weekend at the rolling thunder biker rally for p.o.w.s. >> do we love the bikers? yes. >> reporter: but trump sounding disappointed that the crowd on the national mall is not as big as he'd hoped. >> i thought this would be, like, dr. martin luther king, where the people would be lined up from here all the way to the washington monument, right? >> reporter: trump himself had five deferments to avoid serving in vietnam. he says he's raised millions for veterans. >> and we just raised almost $6 million for the vets. >> reporter: but trump has yet to prove it, and tonight, the questions are mounting. and trump is now holding a press conference tomorrow, hoping to put those questions to rest. he's now promising to reveal how much he's raised for veterans and where all that money tom? >> mary bruce from the nation's capital. mary, thank you. next tonight, a pair of shark attacks rat ming swimmers on both coasts. this video shows the moments after an attack off the florida coast, a teen suffering severe injuries to his leg. at the same time, a second attack on the west coast, and authorities there suspect a great white may be to blame. here's abc's gio benitez. >> reporter: tonight, two frightening shark attacks on both coasts. >> hi, we're in neptune beach. somebody just got bit by a shark. >> reporter: in the east, a 13-year-old boy near jacksonville swimming in just two to three feet of water, bitten in the leg, bone deep. >> he was like, "shark! bit my leg! go, go, go! shark, he bit my leg!'" >> we took our belts off and wrapped it around his leg to try to stop the bleeding. >> reporter: the bite, seven to eight inches wide. the shark believed to be about five feet long. in the west, just south of l.a., another attack, but this time, a shark biting a woman in the torso. >> newport lifeguards are on scene, unknown what type of medical problems, try to get a response. >> reporter: tonight, officials are trying to confirm whether it was a great white shark, which since 2000, have killed five people. last year, there were 98 shark attacks in the u.s., including six deaths. that's the highest number of shark attacks on record. and experts warn this year, that number is expected to grow. as shark populations increase. and tom, tonight, the boy and the woman are in the hospital right now with long roads to recovery ahead of them. tom? >> gio, thank you so much. back home, and americans across the country honoring those who made the ultimate sacrifice this memorial day. this picture from west palm beach, florida, just one of thousands of parades and memorial ceremonies, marking the holiday. at arlington national cemetery, president obama laid a wreath at the tomb of the unknown soldier, marking his final memorial day address at commander in chief. at that ceremony, take a look at that, 5-year-old christian jacobs in uniform at the grave of his father, marine sergeant christophe during a training exercise in 2011. our thoughts and prayers with the families of all veterans who have given their life for this country. and there's still much more ahead on "world news tonight" on this monday. as we head into swimming season, the dangers in the pool that you can't see. how two people were seriously injured in freak accidents after jumping in. how to keep the pool safe. and one of the most famous people on the planet meets one of the most powerful. what the pope gave to george clooney. then, high anxiety. a tractor trailer dangling off an overpass. the risky escape. how the driver got out.cash bacs keep throwing obstacles at you? first - they limit where you earn bonus cash back. then - those places change every few months? i think i'll pass... quicksilver from capital one puts nothing in your way. you simply earn unlimited 1.5% cash back on every purchase, everywhere. you can't dodge the question... to you, they're more than just a pet. so protect them with k9 advantix ii. it kills fleas, ticks and mosquitoes. k9 advantix ii. for the love of dog. burning, pins-and-needles of beforediabetic nerve pain, these feet played shortstop in high school, learned the horn from my dad and played 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back. next tonight, something to seriously think about as we head into the summer. pool dangers you might not notice until it's too late. just this weekend, two cases of people injured after apparently being shocked in swimming pools. the incidents raising new safety concerns. here's abc's clayton sandell. >> reporter: at this new jersey hotel pool, swimmers noticed a a bystander jumping in to safe him. >> chris went to touch him, he went into come you have shuns. >> reporter: the man was rushed to a hospital. police in the hotel say the cause is under investigation, but it may be the second time in two days a pool delivered a dangerous electric shock. in palm springs, a 43-year-old father died in march trying to rescue his 9-year-old daughter from electrified pool water. officials blame a faulty light fixture. swimming pool shocks are rare, but can be deadly. at least 14 people have died since 2002. ungrounded or faulty wires are often to blame, like the kind that zapped these florida swimmers in 2014. the danger is not just in pools. 15-year-old carmen johnson died last month in this alabama lake, electrocuted by defective wiring. safety experts say pool owners should consider instaufling low voltage, less dangerous lighting. they say get one of these. a high tech circuit breaker that cuts a there's trouble. and, finally, have an electrician inspect the pool at least once a year. so that this summer, swimmers can keep splashing, worry free. clayton sandell, abc news, denver. >> thanks, clayton. still ahead, back in custody. how one of the fbi's most wanted murder suspects was captured. where he was tracked down. and, in a tight spot. barely able to move, the rescue that required some team work and heavy lifting, when we come back. d! scott! ready to hit some balls? ooh! hey buddy, what's up? this is what it can be like to have shingles. oh, man. a painful, blistering rash. if you had chickenpox, the shingles virus is already inside you. 1 in 3 people will get 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girlfriend and her unborn child. he was added to the fbi list just two weeks ago. now, to a wild accident that shut down a busy roadway today near new york city. take a look at this. this massive tractor trailer ended up dangling from the side of an overpass. the driver was able to actually jump out of the truck, you saw him there, and onto the roadway. he was treated for head injuries, but he is going to be okay. now, to the vatican. pope francis handing out awards to those who have contributed to his foundation, here with george clooney and his wife amal. the pope awarding him with the olive medal for peace. and later, it was the pope who received a surprise. a slick white surfboard for two surf advocates who were invited to speak. he gladly accepted. now, to the little elephant that got stuck in one tight spot. look at the elephant. scared and sweeling for help after falling into this drainage space in sri lanka. after breaking the drain open, a team used all of their manpower to 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"gma" first thing in the morning. i'm tom llamas. david will be right back here tomorrow. and we leave you tonight with this image. a boy scout saluting veterans at the los angeles national cemetery. from sony pictures studios, it's america's game. wheel... of... fortune! ladies and gentlemen, here are the stars of our show, pat sajak and vanna white. howdy, howdy! good to see you all. thank you. appreciate that. don't rush off. okay. thank you very much. -have a good show. -all right. all right, gang, get ready. it's "toss up" time in the old corral. "phrase" is the category. vanna's in place. the puzzle will appear. and off we go. [ bell chimes ] phil. satisfaction guaranteed. you got it, that's it.