Major Rosado is an Alliance marine assigned to the Second Fleet Marine Force, attached to the Alliance Fleet. Rosado is an expert in Syndicate computer systems, described as the best in the field by his commanding officer, Colonel Carabali. While inspecting a decomissioned Syndicate mining facility in the Kaliban system (later dubbed Ishki's Rock), Rosado discovered that not only had the data files of the computer systems in the facility been wiped, which was standard Syndic operating procedure, but that the operating systems had also been removed. Rosado could offer no concrete explanation, but speculated that it may have been done to prevent some unknown third party from gaining access to the systems.