These days, though Napalm has made a marked return to its grindcore roots over its past four albums, the band continues to explore and reinvent itself, never truly sitting still within its slurring, spastic frenzy. And few in metal are criticizing the Bush administration or directly confronting the politically instigated paranoia that pervades American life with as much fury as Napalm vocalist Barney Greenway. On the other hand, Greenway prefers somewhat indirect lyrics, masks them with his trademark death-metal roar, and does little preaching from the stage. Let the music do the, uh . . . burning, we suppose.