File:MCPON1.jpg

Summary
This is the Eighth NCO ranking in the UNSC Navy and the highest Enlisted. It is equal to that of Sergeant Major of the Marine Corps in the UNSC Marines. The rating symbol is replaced with a gold star with three gold stars above the "crow" this differentiates it as a Master Chief Petty Officier of the Navy. There is only ever one enlisted memeber that is this rank at any giving time and they oversee all affairs that affected the elisted members of their respective service branch.