517th ADA (Air Defense Artillery) Unit Crest (We Sweep the Sky) - Sold in Pairs Driver/mechanic/vehicle bars & badges Criteria: These distinctive unit insignia

Criteria: These distinctive unit insignia (DUI) are worn by the 504th Signal Battalion

United States Coast Guard Auxiliary Past Officer Device

Just remember to carry one with you

The crest at the top is for the Wisconsin National Guard

517th ADA (Air Defense Artillery) Unit Crest (We Sweep the Sky) - Sold in Pairs Driver/mechanic/vehicle bars & badges Criteria: These distinctive unit insigniaUnited States Army 517th ADA (Air Defense Artillery) Unit Crest (We Sweep the Sky) 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