Navy E-4/5/6 Machinist's Mate Rating Badges ISLAND_8C~MCR-68101 he must be a Chief

he must be a Chief Petty Officer before applying to attend the Master Diver course

or other construction units

This shadow box also includes a custom-engraved brass nameplate

United States Army National Guard Recruiting and Retention Badge

United States Air Force Commander's Insignia Badge

Navy E-4/5/6 Machinist's Mate Rating Badges ISLAND_8C~MCR-68101 he must be a ChiefUnited States Navy E 4 5 6 Machinist's Mate Rating Badge Criteria: Worn by Machinist's Mates (MM) with ranks from Petty Officer 3rd Class (E 4) to Petty Officer 1st Class (E 6). Machinist's Mates are typically responsible for the continuous operation of the engines, compressors, refrigeration and air conditioning equipment aboard the USN's vessels and at their land based installations. Some Machinist's Mates are also trained in Health Physics and