Kerts-Bhrg Field Generator
this massive, conical device generated a directional forcefield, when placed into a formation of two or more generators. The Alliance used five Kerts-Bhrg generators to form a shielded pyramid in which to hide its fleet near Arbra's sun, in the wake of the Battle of Hoth. The base of the generator was designed to collect huge amounts of stellar energy, which was then used to power the forcefield it projected from its top. The Alliance's plans nearly worked, until an absorption circuit overloaded. The resulting fire let off noxious fumes which rendered the command crew unconscious. Only the valiant efforts of R2-D2 and C-3PO repaired the problem and saved the fleet.