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Army Master Sgt. Eduardo Buelvas, 1st Sgt. with the 5th Battalion 7th Air Defense Artillery Regiment, sledge hammers a metal spike for creating an Entry Control Point (ECP) during a “Patriot Shock” exercise in Capu Midia, Romania on November 4, 2016. The weeklong exercise tests the unit’s quick response deployment readiness and increases joint interoperability with “Patriot” missile systems and their Romanian partners. (DoD News photo by Tech. Sgt. Brian Kimball) 161104-F-QP401-028 by DoD News Photos
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