Navy E-4/5/6 Operations Specialist Rating Badges SBBA~Double~11192DBR the "Master Diver" insignia resemble

the "Master Diver" insignia resemble the diving medical insignias but are decorated with a caduceus

the Basic NCO Course for MOS 21D30 including Phases I

There are 13 campaigns of the Korean War that are recognized by the United States Department of Defense and each one a member participated in is denoted by a service star on the medal

This decoration is presented to service members who have completed initial port security training in harbor defense operations as well as service for a period of twenty-four months with a Port Security Unit (PSU) stationed in the United States

Navy E-4/5/6 Operations Specialist Rating Badges SBBA~Double~11192DBR the "Master Diver" insignia resembleUnited States Navy E 4 5 6 Operations Specialist Rating Badge Criteria: Worn by Operations Specialists (OS) with ranks from Petty Officer 3rd Class (E 4) to Petty Officer 1st Class (E 6). Operations Specialists are typically responsible for the operation of radar, navigation and communications equipment aboard naval vessels. They are also trained in the ability to control and assist aircraft.. The badge is sold with all 3 chevrons below the rating for