. >> people point us out as adrenaline junkies. but these are very, very calculated risk takers.st going up there and chuckin' stuff. that's how you don't make it to the next jump. >> definitely a little nervous but excited as well. >> reporter: it's time for his first practice dive. >> it's been a long buildup to this. >> reporter: when these divers hit the water, they're no less than four safety divers on hand if anything goes wrong. how was it? it looked good. it looked good from where i was sitting, it looked good. how did it feel? >> it was fine. a little over on the entry. ♪ >> reporter: his second dive. >> woo! >> reporter: let's see that again. two summer saults and a half twist, hitting the water at 53 miles per hour. the impact on their body too much for a head-first entry. every dive you go on a rollercoaster from terrified to overjoyed. >> mm-hm. >> reporter: this is what you do, and yet every time before a dive there's that little hint of fear? >> absolutely. it can start weeks before you come. it comes as soon as you touchdown. it starts when you wake up in the morn

>> i was an adrenaline junkie as a kid, grew up in an alcoholic household.was overall pretty eye dill i can, because of emotional violence in the house from alcoholism, started to lash out at other kids at an early age, got stimulation from causing trouble. as i grew older like many addictive habits, i needed more chaos to get me the same kind of thrill. so things escalated from being a bully on the school bus to getting in fights in the schoolyard to breaking and entering. as a teenager started drinking myself, and that is when i heard white power skin head music which was coarsing with the same rhetoric on display in charlottesville, and for the same reason as these misguided young men get swept up in it, i did as well. >> what did you tell people like this when you encounter them to try to explain how wrong they are? what works? >> the point i make is that i have lived both lives, i've lived their life. i spent seven years of my life terrified of the world around me, hating every other person that wasn't a violent white racist and i live the life i do tod

we get the adrenaline junkies, who do the aerobatic rides, the full-on roller coaster ride. >> it's soing. >> when it comes to planning air the best routes,er. nobody does it better. he's also a championship-winning football coach. look at that formation. but when it comes to mortgages, he's less confident. fortunately for andre, there's rocket mortgage by quicken loans. it's simple, so he can understand the details and be sure he's getting the right mortgage. apply simply. understand fully. mortgage confidently. kim jong-un inherited a regime from his father, who built on it from his father. >> since its founding in the late 1940s, the so-called hermit kingdom of north korea has been led by a family dynasty. three leaders with an iron grip. kim jong-un inherited from his father and grandfather, a regime based on militarization, purge, kleptocracy and oppression. the supreme leader's rule is unquestioned. >> translator: in order to deal with north korea, we have to understand how the north korea system works, they're like a dynasty and the leader is worshipped as a living god. >> analy

we would definitely be self- proclaimed adrenaline junkies, i would say. >> rose: sanna won the marylandathy won it as a trainer in 2002. racing, they say, plays to women's strengths. how do you think women are better at it? >> sanna neilson: you know, if you're 130 pounds, you're not going to be able to bully a 1,200-pound animal. you're going to be able to coax them into doing something, but you're probably not going to be able to muscle them into it. >> kathy neilson: you hungry, bud? i feed my horses every afternoon. i love it. i love to hear them whinny to me. you know, it's a nurturing job, in a way, is to see them flourish. hungry? yeah. >> sanna neilson: so it's something that just gets in your blood. >> rose: but part of it is the danger. part of it is the risk. >> kathy neilson: the danger. yeah. you know, i've broke both my wrists, my knee, you know. >> rose: it's something jockeys train themselves not to think about. a misstep by the rider; a horse that loses altitude and trips on the timber. >> that was haddix who lost his rider. >> rose: even worse, rear-ending or trampling