Fort Strong armory Fort Strong armory is the main administration and storage building for Fort Strong . Background . The armory was where the Fat Man development took place . At the time of the Great War the base was waiting for authorization to transport the Fat Man shells that were being stored in the basement , after shipping the launchers to a supply yard in Mississippi . Layout . Surface level . From the main entrance the first floor walkway has collapsed , creating a ramp . Up here is an ammo box , six desks and a bank of filing cabinets . The door on the northern side is blocked , but a Fat Man can be seen beyond it , through the broken door panel ; this area of the building cannot be accessed . On the lower level there are two doors : the southern door has a Novice lock which can be opened with the Fort Strong key , and the northern door leads into the hallway , which loops around the building back to the southern door . The doorway on the western side of the hallway is guarded by a lone super mutant . There are several junk items in here as well as Private Murnahan ' s holotape , located on the desks against the western wall . If one turns east at the end of the room , there is a collapsed wall , which leads into the kitchen . Continuing on through the kitchen door is the mess hall , guarded by two more super mutants . Turning south after the mess hall counter and going through the door on the west side will lead back into the hall . Looking directly west from the mess hall door there is a baseball display on the left hand wall , containing a poster and two baseballs on wooden podiums . Turning south from the door will enable one to continue through the hallway . Directly to the east is the elevator to the sub levels , which is blocked until the quest , Show No Mercy has been started . Looking through the collapsed ceiling to the west one can see the main entrance . Continuing on south , there is a small bathroom through the door on the west , containing a first aid box . Just beyond this door on the east side is the entrance to the auditorium , behind the collapsed floor in the northeast corner of the room there is a cooler . Scaling the collapsed floor up to the barracks will provide access to the usable bunk beds and a door in the southern corner of the west wall . Passing through the door will lead into a hallway with another barracks on the opposite side . From here , one only has the option to double back and out the auditorium door in order to continue onward . Looking west from the auditorium door , two ammunition boxes can bee seen on the left . Turning right at the end of the corridor one will see the the locked door back to the main entrance . Facing west one can see a desk and another Novice locked door on the south wall . Picking this lock will lead into General Brock ' s office , containing a steamer trunk , General Brock ' s terminal , and a U . S . Covert Operations Manual . Inside his desk is the Fort Strong key , which will open the door back to the entrance . There is also a Master locked safe in the southeast corner . Sub levels . Upon exiting the elevator there is a small office on the west side of the room , turning east will lead to the corridor to the generator room . The door on the north side leads into an office with an armor workbench and another door on the east side leading out to the generator room . On the south side of the corridor is the restrooms , which if one opens the door to the furthest stall from the entrance two purified waters are found in the toilet bowl . From the entrance to the generator room , one can turn south and follow the stairs down to the lower floor . Immediately on the right is a door leading into a corridor to a room filled with consoles . The northeast door in the room feeds directly into another room where a mutant hound can be found sleeping by the western exit , back into the generator room . Going west around the generator and looking north one will see another corridor . On the right hand side , half way down the corridor is a lab , containing Bravo Team ' s testing terminal , by the window to the south of the room . The room on the left has a Novice locked floor safe in the southeast corner . Continuing through to the end of the corridor and turning right will reveal two large doorways on either side of a small room . In this room is a floor trolley with an open crate of Mini nuke parts and two mini nukes on the shelves to the left . On the right - handside of the room is a security cage with the door missing , inside of which is an ammo box and a first aid kit . Heading through the second doorway will lead into the armory storeroom , but the only way down from here is to jump off the gantry to the floor or onto the forklift immediately in front and climb down . The door in the northeast corner of the storeroom connects to the corridor that leads back to the room above . Appearances . The Fort Strong armory appears only in " Fallout 4 " . Notes . If Fort Strong is explored before Show No Mercy is started , the elevator to the sub level is obstructed .