Army Spc. Michael Brown, 92nd Engineer Battalion, 20th Eng. Brigade, 74th Engineer Eng. Dive Detachment salvage diver, secures his surface supply helmet during dive-tank training at Joint Base Langley-Eustis, June 6, 2017. Using surface lines rather than an underwater tank, Tthe surface supply helmet allows for divers to submerge with continuous oxygen and communication.

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