Vem Tabook, leader of 'The Grustrag Three', was committed after the group slaughtered all fellow marines aboard a troop transport. Evidently, the ship took too long to reach battle and the subject was simply "impatient for the killing". Like his accomplices Shik Tal and Leekter, Tabook suffers from a rare cloning mutation. This makes him highly effective in combat but completely unfit for duty.
RECOMMENDATION: Permanent incarceration for study. The subject's combat ability cannot be ignored. If the subject's aggression can be focused, he may yet prove a useful weapon.