This is part of the quest “Visions of the Fog” and will only appear in the map while doing the quest. The terminal inside requires a password which can only be retrieved while doing the quest as well. Inside, there's an ammo box, some basic components, and a caps stash under shelves in front of the security door. Inside the security door, the quest item “mother idol” is found, as well as a stealth boy on the floor beside the table.