517th ADA (Air Defense Artillery) Unit Crest (We Sweep the Sky) - Sold in Pairs ISLAND_9C~80252 • Copper induction dampening system

• Copper induction dampening system to eliminate the need for liquids to slow the rotation of the magnet

global strike and strategic deterrence

Their motto is As Mighty As the Sword

United States Army 138th Personnel Services Battalion Unit Crest (Honor Pride Service)

517th ADA (Air Defense Artillery) Unit Crest (We Sweep the Sky) - Sold in Pairs ISLAND_9C~80252 • Copper induction dampening systemUnited 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