U.S. Army DENTAC Hawaii Unit Crest (Spirit and Concern) - Sold in Pairs SBBA~One~ACU-1098 Sonar Technicians are responsible for

Sonar Technicians are responsible for the the Navy's underwater surveillance

When the medal is presented for valorous actions

Criteria: These distinctive unit insignia (DUI) are worn by the 28th Personnel Services Battalion

United States Army 321st Military Intelligence Battalion Unit Crest (From Darkness to Light)

U.S. Army DENTAC Hawaii Unit Crest (Spirit and Concern) - Sold in Pairs SBBA~One~ACU-1098 Sonar Technicians are responsible forUnited States Army U. S. Army DENTAC Hawaii Unit Crest (Spirit and Concern) Criteria: Unit Crests are unique to each unit in the U. S. Army and are officially known as Distinctive Unit Insignia although most Soldiers refer to them as "Unit Crests." The insignia design is derived from the coat of arms authorized for a unit. All personnel assigned to the organization wear the insignia, except general officers, the Sergeant Major of the Army and the