This guy clearly has mental health issues espousing the merits of Adolf Hitler in one breath and ISIS in another. Most people in their right mind would never draw this much attention to themselves if they truly intended to pass classified information to a terrorist group. This is a cry for help. Sgt. Kang would have already been involuntarily committed under most circumstances. But the military has many uses for expert martial-artists with a violent streak, so they likely let this play out longer than they should have.