The plan came together, and Sergeant En watched carefully, getting a strangely strong reaction when Sarah mentioned Beatrix.  "I don't want anyone loyal to the emperor to die here today."  The sergeant mumbled, lost in thought.  "Rogue Trader Cortez."  The sergeant said louder, suddenly speaking with conviction as a strange spark appeared in his eyes.  "Give me 20 minutes alone here, with these heretics, and I promise you that everyone in the security corridor and vault will be dead."  He said, suddenly unleashing a wave of emotion as he turned away from his men and began to whisper to the assembled explorers.  "I have done... questionable things.  Neither I nor my platoon are what they appear.  By the emperor...  I need to atone.  I need to be forgiven.  Just let me have this, for my men, for my daughter."  Sergeant En croaked, suddenly grinning with a manic energy.  "I have spent the last five years in hell.  I'm no longer of this world.  I am the fifth Champion, the Champion of Chaos descending; the self destructive conceit at the heart of all evil which leads to its end, yet brings it first into the world."  Sergeant En said, going pale as the grave as he realized he was losing control.<br/><br/>"Where's Beatrix?  Where is she now?"  Sergeant En whispered, with a deep conviction that his soul would soon be gone, thanks to the corrupting powers of chaos within him.  "He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you.  It's inside me, crawling within my bones, gnawing from the inside out.  I'm going to die.  By the Emperor... please help me."  The sergeant begged, even as he showed no particular visible outside sign of chaos taint.