The Special Operations Commander of the Covenant appears to be an even higher title than Field Master (perhaps around the same level as a Ship Master or Fleet Master), controlling all Spec Ops within the Covenant and taking missions personally from the Prophets. Also, in Halo 2 and Halo 3, the only Sangheili known to hold this rank is Rtas 'Vadum, who commands an Assault Carrier, a ship usually used by Prophets, showing his high rank. Identification: White armor (Do not be confused with Ultras).