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Could be useful for setting up an ambush for the Cabal incursion.
― In-game description

Skyburners Command Beacon is a consumable found by killing Cabal on the Dreadnaught. It can be used in one of two terminals in the Hull Breach: one is found inside the ship's cargo bay, and one is found in a small alcove along the ship's side on the way to the Mausoleum. Doing this will summon a group of major Cabal and eventually an ultra, who will drop Skyburners Deployment Codes when defeated.