Set up Recon Cameras to get more info about the IO Doomsday Device is one of the Resistance challenges in Fortnite Chapter 3 Season 2.
To complete this challenge, you must first complete Weeks 1 to 5 of this season’s Resistance challenges, and then establish a Device Uplink near Loot Lake.
Completing this challenge will reward you with 23K XP, which will help you unlock skins from the new Battle Pass.