This is not a screenshot icon. Look at the .psd.
This is not a corresponding icon. This belongs to the intellectual property of Microsoft, publishers of the halo series. I made an icon for something in halo. It so happens fingolfin made a model too.
Think of it like someone making a freehand lich king icon. That icon is not necessarily a corresponding resource of Kwaliti's lich king model. It so happens that Kwaliti made a model for the character of the lich king, and someone else made an icon for that same character.