. >> reporter: while red bull athletes are known for pushing the limits, this may be sean mccormack's most dangerous mission yet. >> it's an adventure we're chasing. >> reporter: a flyer in the elite red bull air force at 41 years old, sean's now out to sky surf a thunderstorm. >> everybody likes to say, you can't can't. ride up until you do it. >> reporter: welcome to florida where the summer storms are legendary. with more people killed by lightning here than any other state. last month, two vacationing lightning struck them on clearwater beach. >> i tried to figure out if i was hurting. my whole body was pretty much numb. >> reporter: central florida is one of the most lightning-prone zones in the world. for sean mccormack, that's exactly the point. >> so the big question is, why? >> in all my time training what we're doing here is the one experience that i've had that wasn't really able to get chronicled properly. >> reporter: but for extreme athletes like sean, carefully coordinated red bull stunts these are also about the bragging rights. getting that perfect video. not easy, es

for sean mccormack, that's exactly the point. >> so the big question is, why? >> in all my time training what we're doing here is the one experience that i've had that wasn't really able to get chronicled properly. >> reporter: but for extreme athletes like sean, carefully these are also about the bragging rights. getting that perfect video. not easy, especially when lightning is involved. >> are you aware of just how dangerous it is? lightning-wise? >> i am. i have experience doing it. so i've been in this environment before. and it worked out fine. >> 70% of all lightning doesn't even hit the ground. it's hitting the cloud. when you do this and there's flashes going off, what do you think's going to be going that moment, because it's all pretty quick. i think you'd be amazed how calculated this mission is. >> reporter: at this hangar in florida, an entire team has been assembled for this mission. among them two other skydiving pros. red bull air force captain john devore, and aerial photographer craig o'brien. >> what happens if you bump into sean when he's d

sean mccormack, he's a 41-year-old flyer in the elite red bull air force. that is a thing.eporter: central florida is one of the most lightning-prone zones in the world. for sean mccormack, the question is why. >> in all my time training what we're doing here is the one experience that i've had that wasn't really able to get chronicled properly. >> reporter: for extreme athletes like shawn, carefully coordinated stunts like these are also about the bragging rights. getting that perfect video. not easy. especially when lightning is involved. at this hangar, a team has been assembled for this mission. among them, two other skydiving pros. captain john davore and photographer craig o'brian. what happens if you sboump sean when he's doing his -- bump into sean when he's doing his things? >> it will hurt. >> reporter: to make sure sean finds the right cloud to surf they brought in a meteorologist. joe thompson, meteorologist. >> normally as a meteorologist, you tell people how to stay away. this is the opposite. >> here we go. >> unreal to watch these guys work. unbelievable. al