The main goal of this mission is to defend the ship from the boarders, as well as manning the flagship's AA guns to shoot down boarding Leech Pods and to prevent Helghast jet fighters from harassing the evacuating Intruder ships, so that everyone else has a chance to evacuate the New Sun safely. At the end of the mission a cutscene shows the final confrontation in the ship's bridge and also the destruction of the ship itself.