Hierarchy Central Command
The Hierarchy Central Command was the operating authority for Hierarchy vessels and personnel. Their base of operations was located in the Delta Quadrant.

In 2378, Zet planned to steal tactical information from the Central Command's Surveillance Complex by using his hostage The Doctor to infiltrate their base. Zet planned to alter The Doctor's appearance to make him appear to be a class 1 overseer, who could easily enter the base. However, both The Doctor and fellow hostage Kathryn Janeway were rescued by  personnel before that could take place. ()

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