I'm trying to find a certain episode of Justice League Unlimited - I don't remember much about the actual episode, except the ending, which was very unique - it involved the Green Lantern and the Martian Manhunter in some sort of nuclear facility (or something), the core (or whatever it was) erupts, and as the blast radius slowly emits outward, the two are hopelessly caught in the blast - the episode ends with the two screaming as they are engulfed as well as a very large area in the radius of the blast, leaving a huge crater where everything once was, then the screen darkens and "To be continued..." appears. Does anyone remember the exact name of this episode, and what season it is in?