Sector four, situated beyond the boundaries of the Imperial installation known as Tantiss Base, was a region of jungle found on the planet Wayland. This base was constructed within Mount Tantiss, also on Wayland. Approximately around 18 BBY, Shuttle 135 met its end in sector four due to a crash during a storm, leading to the deaths of its entire crew at the hands of the jungle's inhabitants. Subsequently, after their escape from Mount Tantiss, the renegade clones Crosshair and Omega journeyed to sector four, where they faced both a dryax and elements of the Imperial forces.