PMC Soldiers following South America Test

Vamp interferes with the Sons of the Patriots System for the second time in South America. His actions cause all soldiers in the vicinity with SOP nanomachines to go insane.

The unstable nanomachine emotional control damages the frontal lobe of their brains, the part that controls emotions and speech, leaving the soldiers incapable of anything but destructive behavior.

Feeling no pain, they behave as if they were the living dead.