This must have some use against the Cabal who've already boarded the Dreadnaught.
― In-game description
Skyburners Deployment Codes are a consumable found on the Dreadnaught. It may be obtained by defeating the Ultra summoned through the use of a Skyburners Command Beacon.
The codes may be inserted into a terminal found in a small alcove, inside part of the Cabal ship protruding into the Mausoleum, high above the area. Insertion will trigger a series of patrol missions that lead the player throughout the Dreadnaught, culminating in a hunt for a specific Cabal officer in The Founts. This officer, when killed, will drop Skyburners Security Pass.