Military working dog Kato leaps on top of an obstacle during a K-9 validation Jan. 24, 2017, at Little Rock Air Force Base, Ark. Dog handlers and military working dogs are required to go through validations annually to evaluate the dog’s obedience and health.

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Photo credit: © Chuck Little / Alamy / Afripics
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Keywords: air, america, archive, armed, army, defence, defenders, dog, force, forces, handler, military, navy, reportage, security, service, serviceman, servicemen, soldier, states, united, usa, working