How many attached gold bars does an O-4 in NJROTC wear?

An O-4 in the NJROTC, which corresponds to the rank of Lieutenant Commander, wears four attached gold bars on their uniform. This is a specific insignia associated with that rank, designed to symbolize the officer's leadership and authority within the naval structure. Each gold bar represents a level of rank and responsibility; thus, the four bars are indicative of the O-4 position. Understanding the insignia allows cadets and personnel to recognize ranks and their associated responsibilities easily, which is essential in a military organization for maintaining order and proper identification.