Mississippi Army National Guard Staff Sgt. Troy Smith, a chemical, biological, radiological and nuclear specialist assigned to Headquarters Company, 150th Engineer Battalion, 155th Armored Brigade Combat Team, conducts weapons qualification at Camp Shelby Joint Force Training Center, Miss., Feb. 11, 2018. Smith is preparing for an upcoming deployment to the Middle East in support of Operation Spartan Shield. ( Army National Guard

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Keywords: 155, abct, air, america, armed, army, defence, employee, federal, force, forces, government, military, msng, navy, service, serviceman, servicemen, states, united, usa