From Halopedia, the Halo wiki
Lieutenant Brightling served alongside Lieutenant Bill Streeter under the command of Chief Petty Officer McRobb. On August 30, 2552, Fermion's Alpha Probe detected an incoming Covenant fleet in the system. He alerted Chief McRobb, who then initiated the Cole Protocol and ordered Brightling to remove the station's safety interlocks. Brightling notified McRobb that connections to FLEETCOM networks were being infiltrated and that they were still attempting to destroy the station's vital astrophysics data. As the Covenant fleet moved in to intercept the station, he was assured by McRobb that they had done the best they could. He and the rest of Fermion's crew were killed when the station self-destructed to prevent the Covenant from obtaining the location of Earth..
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