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The Ketch played a major role when the House of Dusk launched a large scale attack against the Vex near the remains of the Exodus Black. The Vex, displeased with the Fallen moving into their territory, went into a frenzy and defended themselves. The Dusk countered by sending Fallen Walkers to push past the Vex.
Later, Jaliks, Fallen Captain left his Ketch stationed above the Exodus Black and attempted to crack Failsafe's defensive shields with his crew. They deployed Servitors to hack the network, only to short circuit and set up terminals for remote access into Exodus Black's security system. Their efforts would be futile as they were stopped by the Guardians.
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