User blog comment:Kaloneous/Connor's Native American Heritage - The Prophecy & The Truth Revealed!/@comment-733050-20120814080808/@comment-4043223-20120815115745

It was probably a Mohawk quiver. I don't meean to confuse the issue but the symbol was used by all the tribes since it was part of the Iroquois lore. From what I have seen the Oneida were the ones that took this aspect of the lore more serious though which is why I used it in my theory. In all likelihood its just a design used in the concept art for added effect but with no meaning.