Peacemaker: James Gunn Says Explosive Stunt Had Producer Convinced Someone Died Peacemaker, and the director took to Twitter to reveal the details of an explosive stunt conducted on set and the terrifying aftermath that befell on one crew member. In a tweet, Gunn wrote: "Last night we exploded a building and a dummy was standing in the doorway and for a full five seconds our producer, Simon, who didn’t know the dummy was a dummy, thought we accidentally killed a guy. I’m not kidding." In a follow-up, Gunn added: "It’s the hardest I’ve laughed since the beginning of the pandemic and I laughed just as hard this morning when I told Jenn."