Navy Civil Engineer Collar Device SBBA~Double~11090DBR for example an F/A-18 squadron

for example an F/A-18 squadron or a Nimitz-class aircraft carrier

Explosive Ordnance Disposal (EOD) Badge

United States Army Male Shoulder Boards - Aviation

but not on the officers ornament

of a single ship

Navy Civil Engineer Collar Device SBBA~Double~11090DBR for example an F/A-18 squadronUnited States Navy Civil Engineer Collar Device Criteria: The Civil Engineer Corps (CEC) is a staff corps of the United States Navy. CEC officers are professional engineers and architects, acquisitions specialists and Seabee Combat Warfare Officers. They are responsible for executing and managing the planning, design, acquisition, construction, operation, and maintenance of the Navy's shore facilities. CEC ranks range from CWO2 to RADM.