What Atom Requires DLC, Far Harbor Quest
This quest will be triggered or can be aquired when you complete Visions in the Fog quest.
Related points of interest
Stages of "What Atom Requires" quest
1. Help the Children of Atom
I've joined the Children of Atom. If I want to really earn a place for myself in this family, it'd probably be worth asking around to see if anyone could use my help.