Petty Officer 3rd Class Corey Jernigan, a Navy hospital corpsman, looks on as Marines prepare take samples during a chemical, biological, radiological, nuclear training exercise, May 10, 2017, during Exercise Eager Lion at the Joint Training Center in Jordan. Jernigan, a reservist from Macon, Ga., is augmenting the Marine CBRN Platoon from Kansas City, Kan., participating in EL17.

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Keywords: air, america, archive, armed, army, defence, eagerlion17, force, forces, military, navy, reportage, service, serviceman, servicemen, soldier, states, united, usa, uscentcom