Marines with Marine Attack Squadron (VMA) 311 perform post-flight maintenance checks on AV-8B Harrier IIs during Exercise Northern Lightning at Volk Field Counterland Training Center, Camp Douglas, Wis., Aug. 13. Exercise Northern Lightning 2018 allows the Air Force, Marine Corps and Navy to strengthen interoperability between services and gives the different branches a greater understanding of aviation capabilities within a joint fighting force.

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