United States Navy E-4/5/6 Engineering Aide Rating Badge
Criteria: Worn by Engineering Aides (EA) with ranks from Petty Officer 3rd Class (E-4) to Petty Officer 1st Class (E-6). Engineering Aides are typically responsible for providing construction engineers with the information they need to develop their plans. They can conduct surveys for roads, airfields, buildings and other large projects. Other surveying tasks can include those of sewers, water lines drainage systems and underwater excavations.
The badge is sold with all 3 chevrons below the rating for E-6, and can be tailored down to the other two chevrons.