From Halopedia, the Halo wiki
During the Battle of Mombasa, Sadie Endesha and Mike Branley traveled through Nyali after fighting several Jiralhanae and an unnamed crone in Koinage. Eventually they made it to the border of Nyali and Obote where the Nyali Bridge was located. The bridge was crowded by refugees from the city. Sadie and Mike made their way over the bridge back to the island in order to save Sadie's father.
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