Book: Other Activities.
Some Guardians roam the wastelands in search of adventure. For decades they have placed beacons across the frontier, so that our allies in the Tower can transmit requests to those out in the wilds.
There are ancient mysteries buried in the ruins, great treasures of our Golden Age to seek. There are fearsome enemies to be slaughtered, their secrets and technology to be brought home and studied. Only Guardians can push through the Darkness to reach these contested areas, and this makes their particular expertise very valuable to those bound by the City's walls.