Air Force Staff Sgt. Angelika Kassel, a 60th Maintenance Squadron, precision measurement equipment laboratory technician, inputs data into a laptop, Jan. 25, 2019, at Travis Air Force Base, California. Various testing methods are used at PMEL to calibrate equipment such as pressure gauges, aircraft transponders and cable tensiometers within decimals of the prescribed standards.

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Keywords: -ru983, 60, afb, amw, archive, armed, couch, defence, forces, heide, military, pa, photo, reportage, servicemen, travis, usa, usaf