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UNSC Marine Corps
Lieutenant Colonel Aboim was a NAVSPECWAR battalion commander in 2524.
He was Staff Sergeants Avery Johnson and Nolan Byrne's commanding officer during Operation: TREBUCHET. He commanded them during actions on Tribute while searching for Insurrectionist bomb-makers from the TOC of the UNSC Bum Rush. He ordered them to pursue a bomb maker to a Jim Dandy restaurant, where a hostage situation ensued, leading to the deaths of three Marines, 38 civilians and two Insurrectionists, as well as the severe injury of Byrne .
He later gave each sergeant notes detailing the result of the mission, along with leave from Operation: TREBUCHET .