Transcript for GoPro Bomb Squad's Death-Defying Jumps
Earlier this evening in arizona, two sky divers collided in a fatal mid-air crash. A sobering reminder that a favorite past time for many thrill seekers can be deadly. But for the gopro bomb squad, nothing compares to the jumps on cameras. And when you look at the views, you might understand why. Here's abc's alex perez. Reporter: It's the ultimate extreme thrill. 5500 feet high above the mountains of northern utah, a brotherhood of daredevils, defying death as they hang from the skids of a helicopter. Seconds away from their big jump. It's the magic these four friends have been making since 2008. Marshall miller, jesse hall, neil and j.T. Holmes. They formed the gopro bomb squad. With your friends, you get to hang out with your friends from a helicopter. Reporter: "Nightline" had full access as they gear up for a jump. And they put us right to work. Over there by the plane. And -- Reporter: They used to have day jobs. Get this party started. Reporter: In catering, finance and real estate, saving money to travel for dives. Then miller approached gopro for sponsorship and turned their hobby into a profession. They won't say how much they're paid, but now they trek the globe. Base jumping off mountains in switzerland and among the fjords of norway, in alaska, pulling off amazing feats with precision, like landing right on the 50 yard line at the raiders game. On the home front, miller it a father of two who ditched his former occupation as a real estate developer. I wasn't passionate. I did it because that's what you did, go to college, get a job. Whatever. Reporter: His wife admit's it's taken time, and she hasn't gone up with him. Be safe, call me as soon as you're done. Reporter: Nicole says that his career change has made him a better father. Let's go, you ready, big guy? Okay, jump in the car. Reporter: This morning, miller is dropping off the kids at school. And then taking the scenic route to work. Yea, that is the playground. Reporter: A playground with very real risks. The scary side is you don't just crash and hurt your wrist or ankle, you crush and you break legs or backs or worse. Reporter: Just last week, a 22-year-old base jumper, daniel moore, seen here in august, was killed when his parachutes opened too late. The third base jumping death in utah this year. As an occupational hazard they prepare for. It's dangerous, there's risk involved. We want to recognize that risk and try and manage it smartly. Who's messing with my gear? Reporter: After testing the gear, time to make sure the cameras are in place. You don't have a dirty lens up there. A big thumbprint. Reporter: And neil, who served in afghanistan and iraq is giving me an assignment, a wind meter, a smoke grenade to see the direction of the wind and the radio. Talk to the helicopter and give us a countdown, and we're going to jump as soon as you say one, go. We jump at go. Reporter: It's game time, and for the first time, nicole is riding along to watch from up above. Once the chopper gets to 5,000 feet, my turn. Three, two, one, go. Pull the pin. There we go. Smoke. From the ground, just specks in the sky. But from above, a bird's-eye view unlike any other. Even after thousands of jumps -- it never gets old. I got so slammed. Like the parachute sometimes opens really hard real fast. I know why it happened. Reporter: For nicole, a new appreciation for her husband's line of work. It was scary because the helicopter went like this a little bit. Reporter: That sense of unease is shared by an experienced jumper like neil, he has a fear of heights. It's scary every time, not terrifiied just anxious. And pushes you. It's magical in a way. Reporter: Life can feel too good to be true. You want to pinch yourself, this is happening again, this is what we do. It's crazy. This is more intense, short-lived intense moments, but you land and just try to wipe the smiles off our face. Reporter: For "nightline," I'm alex perez in morgan, utah.
This transcript has been automatically generated and may not be 100% accurate.