Herold gripped the railing within the interior of the Rhino as they bucked and rumbled through the tunnel, crushing under vehicles and corpses alike. Dozens of tons of metal on a rotor track, it would take something incredibly powerful to shear through the Rhino's outer skin. As small patches of light filtering in from tunnel cracks ran through his squadmates, he saw they were simply awaiting the inevitable problem. Something you did not need to be a psyker to foresee. 

At first, it sounded like rain upon the hull. Only to suddenly clamor and pop against the protective metal as the light began to grow. The Rhino began to jutter from what must have been extremely large caliber rounds slamming into it. Bolter rounds, he had to guess. He hoped to the Emperor they were not facing what he feared, but his hopes were dashed when an explosion ripped through the side hull of the Rhino and send the others through the other side of the vehicle, barely escaping with their lives as they tumbled into the light and before their enemies. Herold felt his shoulder ache heavily, but he paid it no mind.

Most men would have quaked at the sight of three traitor Astartes gazing at them behind heavy weaponry, but Herold simply regained his stance and placed his shield upon his back. Such protection wouldn't help him against bolter rounds. Fortunately, the rest of his squad was too zealous or insane to fear the traitors, and Nergui charged the enemy line with a preturnatural speed that Herold couldn't match pace with. In a brutal display, Herold saw him dispatch the three marines, and the Arbites felt a newfound respect for Nergui's skills. 

"Word Bearers..." The Arbites spat when he learned of their chapter. He stepped over the rise that they had used for cover, and dropped heavily upon one of the Chaos marine's corpses. "Chaos rituals and the like..." Herold went over to check the other side of the trench with the Krieger trooper. He knew little of the ways of the Psyker, and had seen far too many 'rituals' and 'invocations' recently. He'd rather face more traitor marines. Unfortunately, it looked like he would get both.