Final answer:
This question is about the reserves and command structure in the Navy, explaining the assigning of a Navy Reserve Unit CO to their respective supporting Navy Reserve Echelon Commander.
Step-by-step explanation:
The subject of this question is Navy and it pertains to the reserves and command structure within the Navy.
In the Navy, there are Reserve Units that have a Commanding Officer (CO), and they can be assigned to a supporting Navy Reserve Echelon.
The level of Commander they are assigned to depends on the specific echelon, which could be a Squadron, a Group, or a Fleet. The Commander of the echelon would have a higher rank and authority.