Guy Gardner: Warrior (1992-) #20

With the aid of Golden Age Green Lantern Alan Scott, Warrior assembles a team to investigate what's happened on the planet Oa. Alongside Martian Manhunter, the Ray, Wonder Woman, Darkstar Ferrin Colos, Captain Atom and Arisia, Warrior battles rogue Green Lantern Hal Jordan as the assembled heroes fight to take down one of their own.