Abandoned addon - Alien Assault

A hulk has been discovered in the Istan system and it has been nothing but trouble to the imperial guard commander at the location. He has lost about sixty men in that hulk and he not risking any more of his finest soldiers so the Space marines have been called to the hulk. The commander says that his scanners have detected a C.A.T giving off a weak signal from inside the hulk but the hull is to thick to determine anything else. All contact is lost on normal voxes inside the hulk which means not much communication can go in or out. Another space marine fleet ship will arrive at the hulk to enter before you but you must head straight there just incase something goes wrong. If we can recover this C.A.T then we can determine exactly what has happened in this hulk.