The pack literally tore their way out of the synthetic alloy constraints, and even unarmed proved to be an unstoppable force. The Marines managed to wipe out their fierce gray-haired leader, and Brien hid and watched in amazement as his death incited something primal in the others, who began scrambling and recklessly attacking with more viciousness and abandon than before. But what really interested him was that there was one lone Brute whose coat was much shaggier than the others, that didn't charge and simply watched the melee. He thought at first he might have still been suffering from the effects of the tranq, but immediately after the enraged pack overwhelmed the unprepared Marines, they turned on their inactive brother. Brien was mesmerized by this murderous rampage. He was lucky to make it to the evac craft in one piece.-Chpt.3 pg.60