How can I progress "The Molecular level" quest with the Brotherhood of Steel?

How can I progress "The Molecular level" quest with the Brotherhood of Steel? - Decorative cardboard appliques representing hand with dollar banknotes and numbers above chart on blue background

I just got the schematic for the molecular relay and want to build this with the Brotherhood of Steel but every time I talk to Danse he says the repeating lines like "fix armor in garage, the sooner Halen has transmitter installed the better, dealing with pests, ask around to help" or he just says "I'm busy".

I am unsure of how to proceed. I am an initiate and I have been doing the other quests for Rhys and Halen nonstop but seemingly no progression. What am I missing?



Best Answer

The side quests you've been completing for Rhys and Halen are infinitely repeatable side quests and do not directly progress the main story of the game. The Brotherhood of Steel quests leading up to the Molecular Level are as follows:

  • Fire Support: Join the shootout at the Cambridge Police Station.
  • Call to Arms: Follow Paladin Danse to ArcJet Systems.
  • Semper Invicta: Accept your first quests as an official member of the Brotherhood of Steel.
  • Shadow of Steel: Hitch a ride on an airship to get a promotion.
  • Tour of Duty: It's orientation day at the Prydwen.
  • Show No Mercy: It's time to hunt mutants.

Since you're already doing the side quests for Rhys and Halen you've likely already completed at least Fire Support and Call to Arms and if Danse is not talking to you then you're probably on Shadow of Steel.

For the Shadow of Steel mission you need to tune your Pip boy into the military frequency named AF95, which will then update your Pip boy with instructions to meet up with Paladin Danse on the roof of the Cambridge police station, to fly off to the Prydwen.




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How do you progress the Brotherhood of Steel Quest?

1 Answer
  • Fire Support: Join the shootout at the Cambridge Police Station.
  • Call to Arms: Follow Paladin Danse to ArcJet Systems.
  • Semper Invicta: Accept your first quests as an official member of the Brotherhood of Steel.
  • Shadow of Steel: Hitch a ride on an airship to get a promotion.


  • How do I get the molecular level quest?

    The Molecular Level is a main quest mission in Fallout 4 and part of IGN's Walkthrough. This mission begins immediately after completing Hunter Hunted. Your goal is to get the new Courser Chip analyzed, so head to back to Goodneighbor, and go to the Memory Den to see the doctor.

    How do you complete the molecular level in Fallout 4?

    The Molecular Level Quest Walkthrough
  • Have the Courser Chip Analyzed.
  • Search the Railroad HQ.
  • Analyze the Courser Chip.
  • Return to Virgil.
  • Get Help to Build the Signal Interceptor.
  • Talk to [Faction Scientist]
  • Build the Reflector Platform.
  • Build the Beam Emitter.




  • Fallout 4: All Brotherhood of Steel Scenes + Main Quests + Ending(PS4/1080p)




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    Images: Monstera, Monstera, Brett Jordan, Miguel Á. Padriñán