When the tour manager unpacks a pistol from a FedEx box, there’s a strong hint that the documentary of this French electro-house duo’s spring 2008 American trek will end badly. And after numerous trips to shooting ranges, the Las Vegas wedding of Justice’s mutton-chopped Gaspard Augé to a blurred-faced babe, and très Girls Gone Wildlike backstage footage, it does. Favoring excessive computer and crowd noise over the pair’s concise hooks, the relentlessly bombastic concert CD accompanying the DVD combusts as if it were one 66-minute, fireworks-spewing finale.