From Halopedia, the Halo wiki
Kulas is a UNSC marine. Due to the awakening of a Guardian, he and others were inadvertently brought to Genesis in late October of 2558. They holed up and established a defensive perimeter. Kulas recorded a status log where he noted the fact that they were low on ammo and expressed his lack of confidence in their ability to hold off the Covenant. This log was discovered by Fireteam Osiris when it arrived at Genesis.
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