Staff Sgt. Samuel Saintz, 620th Ground Combat Training Squadron formal training instructor, surveys his area of responsibility for combatants during the 2017 Global Strike Challenge at Camp Guernsey, Wyo., May 18, 2017. The 620th GCTS instructors placed the teams of defenders in real world scenarios to test their capabilities and knowledge in combat.

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Keywords: 90th, afgsc, air, america, archive, armed, army, defence, force, forces, mighty, military, mw, navy, reportage, service, serviceman, servicemen, soldier, states, united, usa