Barto....backdrop to the story..This was indoors...secondly the garden had just re-opened after massive renovation, its started when some fans started ripping the new seat cushions out of the seats and throwing them down towards the floor...its was pretty cool watching all the seat cushions flying around during Megadeth's set. Someone in security decided it was best to start collecting all the seat cushions , that were being thrown around, they started piling them in the center of the floor, between the security gates, so they had a nice size pile, by the time Slayer was getting ready to hit the stage, now remember these cushions were probably made of foam rubber of some sort. About two songs into Slayer's set, someone threw either matches or a lit piece of paper on the pile, it went up within seconds, a raging fire about 20-30 seat high filling the garden with thick black smoke. The house lights came on, they cut the power to the stage and security and NYC police attacked the fire with fire extinguishers until the fire was out. Tom A had to ask the crowd to behave themselves otherwise NYPD was gonna pull the plug on the show. I honestly thought the crowd would riot, but Slayer seemed to calm the crowd down to the point where they let the show start back up. Tom kept asking the crowd to go crazy but asked them to please not use the "Flames of Hell' again.