BRIGHTEST DAY lights up the battlefield this issue as Firestorm guest stars! The Green Lantern Corps is caught in the middle of all out war between Sinestro and his fear mongrels, the Sinestro Corps, against the Weaponer and the Thunderers of Qward. Can Kyle Rayner, John Stewart and the rest of the GL Honor Guard prevent the destruction of a world and save Soranik Natu at the same time? Learn why no one in the universe messes with Sinestro and lives to tell the tale in this heart-stopping finale to "The Weaponer"!