Robert had managed to get in and out with the stone, while avoiding a fight with the zombies, surprisingly enough. With that stone, and the sample for the dragons, they had everything they needed. Even so, Robert felt the need to go back in and finish off the zombies, simply because they could. "And what, exactly, is there to gain?" Trey asked. "Going in for the stone, I can understand, but now we already have everything we could possibly need. There's no point in endangering ourselves any more than we already have."