ArcJet Systems

ArcJet Systems is a location in the Commonwealth in Fallout 4.

Background
ArcJet Systems was a pre-War technology company located in the greater Boston area. They produced electronics and rockets used by the USSA until 2077.

In 2075, ArcJet began working on a nuclear-powered rocket, the XMB booster engine, in hopes of convincing the United States Space Administration to award them the lucrative contract for their Mars Shot Project. Despite the risk of starting work before the contract, it paid off when the USSA gave them both the contract for the booster engine and the contract for a deep range transmitter. Both projects were completed before 2077, however ArcJet only received payment for the Deep Range Transmitter project, as the rocket was delayed prior to the Great War for problems on the western front.

Upper floors
The upper floors of the building have suffered massive internal damage, making it a maze of collapsed floors and ceilings. This area consists of a main lobby area, offices, restrooms, data storage, and board rooms. During the quest Call to Arms this section of the building will be infested by synths.

ArcJet engine core
Beneath the main building is a large rocket engine test chamber. The XMB booster engine can be found suspended from the ceiling. At the bottom of the chamber is a facilities terminal inside a small control room that can be used to restore auxillary power. The engine is still functional and can be activated by pressing the start button in this control room once power is restored. The engine will test fire and the intense flames from will turn all synths inside the chamber to piles of ash. This can only be done once and cannot be repeated.

The only way to access the top section of the chamber is to ride the elevator due to collapsed stairs. At the top is a main control room and multiple synth enemies. Here you can find the deep range transmitter and an elevator to the surface.

Notable loot

 * Discarded ArcJet worklog – In the lab control room, on a desk next to a terminal and a globe in the middle of the room.
 * 2 Stealth Boys – The first is past a locked door (novice) to the right of a collapsed stairway in the small lobby with a broken, flooded floor. Once through the door, check behind the collapsed floor/ramp to the right to find the Stealth Boy sitting on a metal shelf. The second is located in a locked safe (expert) on the second floor across the lobby, in the room northwest of the first stealth boy.
 * Tesla Science Magazine issue #1 (+5% energy weapon critical damage) – On the table with the CEO's terminal. You have to pass the same locked door as for the first Stealth Boy, but turn left instead and go up the stairs. It is in the first room you come to.
 * Overdue book – Sitting on the large table in the meeting room, which is located on the second floor in the northwestern corner of the hallway where you encounter three machine gun turrets attached to the ceiling.
 * 2 Mentats – One in the second floor bathroom to the NE, on the couch. Another one by a skeleton in a broken elevator.
 * Junk Jet – Engine Core, in the control room at the base of the rocket, on a work table beside a holotape from the creator.
 * Technician's personal log - On the table with the Junk Jet.
 * Fusion core – In the generator room behind the rocket control room.
 * Deep range transmitter – Quest item for Call to Arms, located on a Synth in the upper floor control room after using the elevator in the rocket test area.
 * Fat Man – Sitting on a desk inside the north room (Marked with a '2' on the right side of the door) in the ArcJet Engine Core section. NOTE: This can either be accessed going down from the top of the stairwell, or by getting onto the railing as soon as you enter the area with the engine and jumping up to the walkway that leads to the room marked with a "2".

Appearances
ArcJet Systems only appears in Fallout 4.

Behind the scenes

 * ArcJet may be a reference to an engine produced by Lockheed Martin by the same name.

Bugs

 * In the ArcJet engine core section, on the second floor, there is a locked terminal in the room that displays expert required hacking, but is actually a master locked terminal.
 * P.A.M. can give the missions to kill Coursers (Railroad) in this location but you won't have access to most areas yet due to another companion mission not being completed yet. This will leave you unable to finish the mission.
 * In the Engine Core section, When you activate the rocket engine while the quest Call to Arms is not activated and Paladin Danse is not in the room, Companions will get stuck in the observation room. Reloading an earlier save is the only way to fix them.

Gallery
Аркджет системс