What insignia indicates a ranking official is the Secretary of the Navy or above?

The spread eagle insignia is the correct indication that a ranking official holds the position of Secretary of the Navy or above. This insignia has historical significance, representing strength and vigilance. It is prominently used at high levels within the Navy and signifies a level of authority and responsibility characteristic of the Secretary's role and higher-ranking officials. The eagle is a traditional symbol of the United States, embodying the values and mission of the Navy.

In contrast, while other insignias may represent different ranks or functions within the military hierarchy, they do not carry the same recognition or weight as the spread eagle insignia in indicating such high-level positions like the Secretary of the Navy. Thus, the spread eagle is specifically associated with the greatest authority in the naval command structure.