"Warrant Officer" is the rank of an unnamed Duty stalker stationed the Garbage. He is the squad leader of a team of Duty stalkers who guard the entrance to the Rostok factory from the Garbage. Initially, he will refuse the Marked One's entrance to Rostok until the player gets the documents from the Agroprom Research Institute; wherein Barkeep will talk to the officer to allow him through. Attempting to force one's way to Rostok prior to completing the task of retrieving the documents will result in either you fleeing in time through the gate depending where you are or you being shot.