From Halopedia, the Halo wiki
Special inspector is a title within the Gao Ministry of Protection held by high-ranking detectives and investigators of the department. Special inspectors lead field teams to investigate a variety of crimes and disputes on Gao, while others lead certain units of the ministry, such as the ministry's general homicide unit. Special inspectors respond directly to the Minister of Protection. Deputy inspectors serve as the second-in-command to each special inspector.
Veta Lopis and Angel Miramontis both served as special inspectors for the Ministry of Protection, though Lopis was eventually recruited into the United Nations Space Command's Office of Naval Intelligence in July of 2553 following a series of conflicts on Gao.
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