Located at the mouth of the outer space "wormhole" that allows travel from Alpha Quadrant to the Gamma Quandrant -- where the cruel and vindictive Dominion reigns supreme -- DS9 is well-positioned for adventures of all kinds. Avery Brooks stars as Bejamin Sisko, head of the space station Deep Space Nine. Catch all the exciting Season 3 episodes to see whether the Federation can protect its mission.