Staff Sgt. Brandon Didonato, 86th Maintenance Squadron aircraft metals technology technician, uses a refractometer to measure the viscosity of coolant oil on Ramstein Air Base, Germany, May 3, 2017. The 86th MXS Aircraft Metals Technology shop welds and machines tools and parts, such as bolts, brackets and exhausts, in support of the flight line.

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Photo credit: © Ted Small / Alamy / Afripics
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Keywords: 86th, air, aircraft, america, archive, armed, army, defence, force, forces, maintenance, metals, military, navy, ramstein, reportage, service, serviceman, servicemen, soldier, squadron, states, technology, united, usa