. >> an ill-conceived stunt goes horribly awry in sydney, australia. 39-year-old brian concannon, an stuntman and self-described daredevil, lights himself on fire and rides a bicycle off of this roof onto these mattresses. >> we're about to watch brian concannon do a bit of a stunt, and this is his preparation. that's his landing pad. that's his son over there. >> it's a family event. >> 26th of october. >> the voice you hear is one of his kids, who films and narrates the action. >> so he's going to set himself on fire on just the edge there of the building, cut on a motor bike and jump off that ramp, throw the motor bike off and land on those pads. >> concannon builds this crude ramp out of milk crates and places it on the roof of a public rest room facility. but don't worry. he's filled a garbage can with water that he'll use to douse the flames. >> i had all the necessary safety clothing. >> the stunt doesn't seem to make much sense, but brian says he's performed several successful fire stunts before. this time he doesn't take all the precautions he needs. >> i wasn't 100% prepare