517th ADA (Air Defense Artillery) Unit Crest (We Sweep the Sky) - Sold in Pairs ISLAND_14D~81231 United States Army 91st Engineer

United States Army 91st Engineer Battalion Unit Crest (Acts Not Words)

Warriors First is their motto

Criteria: These distinctive unit insignia (DUI) are worn by the 507th Support Group

United States Army Staggered-Right 1/8-Inch Spaced 13 Ribbon Mount

Constructed with 1000 Denier nylon

517th ADA (Air Defense Artillery) Unit Crest (We Sweep the Sky) - Sold in Pairs ISLAND_14D~81231 United States Army 91st EngineerUnited 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