What does the E-4 Petty Officer Third Class shoulder insignia consist of?

The shoulder insignia for an E-4 Petty Officer Third Class consists of one red chevron, a rating designator, and a white eagle on a field of blue. This design reflects the rank structure and insignia system within the Coast Guard. The single red chevron not only signifies the specific rank but also follows the traditional military insignia design that differentiates ranks visually through the number of chevrons. The inclusion of a rating designator indicates the specific technical specialty or skill of that Petty Officer, marking their qualifications and role within the service. The white eagle symbolizes the Coast Guard and serves as a distinctive emblem of service, all set against a blue background which is representative of the maritime heritage.

This understanding of the insignia is essential for proper recognition and respect within the ranks, as each part of the insignia has a significant meaning tied to the individual's position and capabilities within the U.S. Coast Guard.