Navy E-4/5/6 Machinist's Mate Rating Badges Rating Badge Type:Blue Serge United States Navy Chief Petty

United States Navy Chief Petty Officer Identification Badge

United States Army Cap Strap

Worn on the lower left breast pocket of a military uniform

Criteria: Worn by Intelligence Specialists (IS) with ranks from Petty Officer 3rd Class (E-4) to Petty Officer 1st Class (E-6)

Navy E-4/5/6 Machinist's Mate Rating Badges Rating Badge Type:Blue Serge United States Navy Chief PettyUnited 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