i thought i was going to be electrocuted or suffocating in smoke. and i totally thought i was going to die. so i absolutely panicked. >> even for a battle-scarred veteran stormchaser, taking a direct hit like this is a bone-chilling moment. >> i started honking on the horn because there was an rv in front of me. i thought i would try to get their attention, but they just sped on ahead and i actually don't blame them at all because they might have thought that they were next. >> alone, john pulls out his cell phone. >> i need to stop. i need to call 911 right away. >> as john calls for help, his footage is cut off for several minutes. >> the thing about the 911 call is that they didn't know exactly where i was and neither did i. so, it took them about 15 minutes to get there. >> now that the storm has passed and help has arrived, john begins to film, again. >> i'm here with the nebraska sheriff and the truck was just