boom, the vibration in the ground and the heat on the back of my neck. >> holy cow! >> the high-voltage wires unleash a fury of arcing energy. >> the thing the tape doesn't show is the vibration. i mean, we were all, like -- it was, like, did we get shocked, or what was that? it just doesn't show how loud or how much energy was released when that thing let go. you could really feel it. it was like the bass at a rock concert. it was just shaking. >> everyone is stunned by the unbelievable surge of power and flames. >> the ball of fire originally started out small. and by the end it was probably the size of a full-size pickup truck. so it was enormous. it was huge. and the vibration of the ground was incredible. you know, when 7,620 volts blows up right behind you, it's tough to be prepared for that. >> the explosion continues for several hundred feet, shooting out sparks and blowing out a transformer. >> watch out, jason!