United States Navy E-4/5/6 Gas Turbine System Technician Rating Badge
Criteria: Worn by Gas Turbine System Technicians (GS) with ranks from Petty Officer 3rd Class (E-4) to Petty Officer 1st Class (E-6). Gas Turbine System Technicians are typically responsible for all of the gas turbine engines used by the USN. They maintain and repair all of the propulsion machinery and associated (including electronic) parts.
The badge is sold with all 3 chevrons below the rating for E-6, and can be tailored down to the other two chevrons.