627th Civil Engineer Squadron Airmen use their air base defense training during their internal Capstone exercise April 20, 2017 at Joint Base Lewis-McChord, Wash. In the scenario several unidentified and hostile foreigners attempted to gain access to the base.

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Photo credit: © Ted Small / Alamy / Afripics
License: Licensed
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Keywords: air, america, archive, armed, army, defence, derby, fishing, force, forces, iii, mcchord, military, navy, reportage, service, serviceman, servicemen, soldier, states, top, united, usa