This will turn it instantly hostile to Ronnie, though not to the Sole Survivor. If hacked to be given friendly commands Ronnie will still fire at Sarge.Talking/hacking Sarge after the initial hack can prevent this, allowing you to effectively control Sarge. However, he may tell the Sole Survivor that his Minuteman database is corrupted and will enable his defensive protocol, essentially rendering the hack moot as he will turn hostile. If one has upgraded the Robotics Expert skill one can initially prevent Sarge from turning hostile by hacking him before he has deployed fully.This can drain health fast, sometimes faster than a stimpak can heal the player character (depending on game difficulty settings). Sarge can corner the player character and will keep on using melee attacks.