Operation Angel fall was the Twilight Alliance Counter Strike operation against the Sith following the Battle of Utapau. Using Sith and Imperial ships captured during the battle of Utapau, 13 in total the alliance planed to decimate what they assumed was the Sith headquarters. The ships were programed to crash into the surface of Roon at the center of the Sith presence on the world. The resulting detonation of their reactors and munitions left a several kilometer wide crater on the planets surface.