Airman 1st Class Kristen Lowder, a medical laboratory technician assigned to the 28th Medical Support Squadron, labels a test vial to reset a coagulation machine inside the medical laboratory at Ellsworth Air Force Base, , April 24, 2017. The laboratory equipment must be quality checked every morning to ensure proper readings.

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Keywords: 28th, air, america, archive, armed, army, bone, defence, ellsworth, force, forces, marrow, mdss, military, navy, reportage, service, serviceman, servicemen, soldier, states, united, usa