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Kind of like something hit the slide. I turned around and the raft was coming on the second drop immediately after the raft. You see a body behind the raft. I told my cousin i thought it so i told her, i think thats blood. Brought tears to my eyes that someone else lost their child. Thats my childs age. Im sure they felt it was safe. Reporter caleb was with his father, kansas state representative scott schwab, mother, and brother, celebrating elected officials day at the park. His grieving family telling abc news in a statement, since the day he was born he brought abundant joy to our family. We are comforted knowing he they are forever together now. We will see him another day. I spent the last 24plus hours with him. Ask as you can imagine, this has been devastating. Its been devastating at every level. You leave church, you gow to a water park to be with family. And to enjoy. And then you hit tragedy. Theres just no way to prepare for this. Our thoughts and prayers are with the family during this difficult time. Little about what happened and denying requests for interviews. This is the view from the top of verrucht. At 168 feet its taller than the statue of liberty, niagara falls, and the arc de triomphe. Thrillseekers free fall 17 stories in seconds. They can hit speeds of nearly 70 miles an hour. Commercials for the ride evening and reporter when the ride first opened two years ago, many were asking a different question. Is it safe . Concerns only heightened after this video from the rides testing phase appeared on the travel channel show extreme water parks. Sandbag dummies launching off the slide. The rides opening was repeatedly delayed while designers attempted to work out the flaws, adding in more Safety Measures like netting and safety belts. Then it was finally deemed a in the parks crown. When it was finally deemed ready for people, i was one of the first to go down. This is literally not for the faint of heart. Reporter there were lifeguards, safety checks, a park employee at the top reading a twopage Liability Agreement to each rider out loud. Theres a risk inherent so the activity reporter my first trip was an adrenalinepumping, vertigoinducing plummet. Overall, safe and fun. A completely different scene than over the weekend. But its easy to see how a fastpaced ride, things can go wrong in an instant. This man was in an austin, texas, area slide when he careened over the edge. Down a rocky cliff. He suffered a broken arm and fractured ribs and survived. In this video a man desperately holds on to another rider after falling out of the raft before eventually being plucked back to out of her inner tube into the path of other riders. You okay . Shes okay, shes okay, shes okay. Reporter she too made a full recovery. If it seems like Amusement Park rides are getting more extreme, youre not imagining things. Parks across the country are in a sort of arms race, competing for visitors by offering bigger rides, steeper drops, and wilder thrills. Raising the stakes on passenger safety. Last year a train on a mega coaster ironically called the smiler smashed into empty cars, injuring four people, leaving 16 riders dangling for hours. But its not just the hulking coasters that can lead to injuries or fatalities. Ive got three kids that fell from the ferris wheel, three kids. Reporter hours ago, three girls were injured when they fell from a ferris wheel at reportedly awake and alert. This video shows the moment before this 11yearold nebraska girl suffered a gruesome head injury after her hair was caught in this spinning ride. The girl is still recovering. And this may, a texas teen died at a church carnival. She was hurled from her seat on a small spinning ride like this one. This is not something that you ever think is going to happen. Its falling off, its got people reporter water rides are considered among the most dangerous types of attractions at Amusement Parks. Over 4,200 people are taken to the emergency room after suffering injuries at water parks each year. The red cross offers a few safety tips. Learn to swim. Consider putting kids in life vests. Onequarter of all drownings occur in shallow water. Look for lifeguards and signal read the signs and follow all rules. But in the wake of calebs death some are wondering if there are enough rules in place. Quite possibly this incident is not going to be a result of a mechanical issue, more possibly a result of a human error. Reporter when verrucht first opened riders had to be at least 14 years old. That regulation has since changed. Theres a minimum height of 54 inches and two to three riders must be in a raft with a total kansas state laws dont specifically address water slides, but regulate that primitive water slides must be inspected at least every 12 months. The park is now empty. The schlitterbahn closed today and tomorrow, the verrucht shuttered indefinitely. For nightline, im matt gut. Theyre all striving for gold. Few will attain it. Were with the mens gymnastics later, a rare look at one of the most isolated areas of the world. North korea. marco. polo marco. polo marco. s . . Polo marco. polo scusa . Ma io sono marco polo, ma. Marco. playing marco polo with marco polo . Surprising. Ragazzini, io sono marco polo. S . , sono qui. How much money amanda and keith saved by switching to geico. Ahhh. Polo. Marco. polo fifteen minutes could save you fifteen percent or more. Polo tired of redosing antacids . Try duo fusion new, two in one heartburn relief. The antacid goes to work in seconds. 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Winning gold. Coming in second. The rivalry may be old. The trash talk is new. Yesterday she came in first in the semifinals jubilantly holding up number one. Watching it on the locker room tv, king responded with a wag of the finger. Then this. Youre shaking your finger, number one. And youve been caught. Reporter it seemed so ugly the ioc, which allowed most russian athletes to compete in the games despite allegations of statesponsored doping, publicly calling on athletes to play nice. Saying, we would encourage people to respect their fellow competitors. Mostly the americans did play nice and did a lot of winning the past couple of days, including seven medals in the pool tonight. Michael phelps pocketing more bling for his olympic treasure his 100meter Freestyle Relay Team winning and then tearing up on the podium. Katie lid deckky so dominant in the 400meter freestyle she had time to win, look at her time, and celebrate, before the secondplace finisher even touched the wall. Katy ledecky smashes her own world record reporter Ginny Thrasher setting the olympics of with a bang taking medal in womens air rifle, a sport that requires superhuman precision. If you took a period in time roman font youd have to shoot that. Thats insane. Shooting may not be the biggest fan favorite at the games but the diminutive thrasher has become one herself. My phones been blowing up the last 36 hours. Behind me and its such an awesome feeling. Reporter the first olympic gold for the u. S. Team in these games. Its historic. Perhaps its that focus that has kept team usa winning. Theyre in the lead with 19 total medals followed by china with 13 medals and japan with 10 medals. The team to beat at these olympics the superstars of the u. S. Womens gymnastics team. Go usa we know we have big responsibilities ahead of us. Wee reporter yesterday the human spring simone biles made her gargantuan landing on rios stage, leading team usa to an unheard of 10point lead in their competition. 2012 double Gold Medalist allie ri allie rise man on the balance beam. The women will go for Team Gold Team . The mens team Sam Mccullough thought theyd better market if they competed shirtless. They certainly made a statement with this instagram picture they posted on copacabana beach earlier this year. Oh, this is a great picture. Like wow, this is a great background, lets post it. Then people like freaked out about it. Reporter trying to prove they are more than just muscle, the mens team took their shot at the team gold. After not having an olympic gold i caught up with the Team Three Months ago at the Olympic Training Center in colorado springs. I mean, look at that technique on the pommel horse. At the time they were still an eclectic bunch of 16 athletes fighting for five spots. Almost died. That was almost an 8. Three more inches this way, youd be good. Reporter the youngest 19. The oldest 30. All of them craving olympic but greatness. Were training to be the best in the world. How do you decide the team . What are the parameters . Thats really difficult. Its a puzzle piece a little bit. Were looking for the five guys that fit best together on the events. Maximize the team score. Reporter you could say the pressure is on the guys, unlike their counterparts on the womens team, who have won two of the last five Team Gold Medals at the olympics and are favored to win again this year. What do you think your chances are at rio . I think weve got an incredible chance. We have so much depth here when you look at these young guys. Theyre not only pushing themselves to try and get on that team, theyre pushing us to be better as well. Reporter with the constant highimpact training, injuries are painfully common. Micro from your on my ankle. On my fright forearm, five surgeries to get it fixed. Torn ligaments. Had those repaired. Ive had ten surgeries total now. Reporter one of the youre the only guy in this gill whos won an olympic medal. How much pressure is on you right now . I dont think that gives me any pressure at all. Its a clean slate. Reporter leyva did not originally make the first cut of the olympic team. He made when it a teammate tore his acl during a dismount in training last month. Right here reporter making the most of his Second Chance at olympic glory, but in the competition, it just wasnt to be. U. S. Men putting up a valiant effort but ultimately falling short of the medal stand. As for me, the only road to rio is with a press pass. Pick your left leg up. Youre going to pick thats it. Thats all i want to see you do. Reporter what the princes of the pommel horse can do effortlessly leaves me awed and a little winded. Almost reporter for nightline, im matt gutman, rio de janeiro, brazil. Next, a new view of north korea. Were taking you to pyongyang. 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S. And north korea, we got access never allowed before. Of course, we were not allowed to fly outside the city to see missile launchers or labor camps. Nation seems to be in the middle of a construction boom. And changes are visible on the ground too. At least in this part of pyongya pyongyang. Just a few years ago we had to leave our cell phones with north korean authorities when we arrived. This time, people talking on their phones on the streets while gleaming new buses whiz by. The rhetoric still the same hard line. Particularly so when asked about the sanctions the u. S. Placed on north korean leadership last month. The United States crossed the line in relations with dprk. Reporter one of north koreas top officials han ri gave their first tv interview in more than a decade. So we regard it at the declaration of war. Reporter tension is palpable two hours south on the demilitarized zone. North korean soldiers on one side face down american and south korean troops on the communication . There is no diplomatic contact channel now. There is no communication line between two sides. And so the tension is getting worse and worse. Reporter and just last week, north korea conducted its latest missile tests. But back in the capital, there is no sign of war. Families enjoying the summer and making memories much like their for nightline, im bob woodruff in pyongyapyongyang. With the eyes of the world on rio, were reminded of the wise words of olympic champion Wilma Rudolph who said, the triumph cant be had without the struggle. True in sports, true in life. Thank you for watching abc news. Join us for Good Morning America tomorrow. As always were online at abcnews. Com and our nightline