This is the Vault-13 Command center section of the map of the wasteland presented by:
Go here right after you done with Vault-15 and and before you are done the water-chip quest and talk to the store-room gaurd. He will tell you that someone is stealing water and give you a quest to stop him. At mid-night fallow the suspishos caracter and after he exits the store-room ask him to see what he has. You will need to kill him and talk to the store-room gaurd again then the quest is done. Then when you are done the Water chip test talk to the Overseer again and he will give you a nother quest.