How to unlock: Complete the Call to Arms quest and talk to Haylen on the Cambridge Police Station (M5,1). It is one of Brotherhood's random quests.
- Talk to Haylen
- Go to the marked location
- Kill enemies and take the artifact from the chest
- Go back to Haylen for the reward
This quest is one of few random, repeatable missions that can be completed for Brotherhood of Steel. In order to take it, you must first complete the Call to Arms quest that is completed together with paladin Danse. From that point you can talk with Haylen who will give you missions during which you must obtain some valuable items. You must go to selected location, get rid of enemies and find the marked chest in the building. Take the artifact you are looking for from it and go back to Haylen on the Cambridge Police Station. Talk to her and give the item back and you will receive some experience and bottlecaps. You will be also able to immediately start another similar quest.
Quest rewards: experience points, bottlecaps, new side quests.