Instrumentation technicians – the ones behind the scenes of testing at Arnold
Gage Seals and Terry Bush, instrumentation technicians at Arnold Air Force Base, clean part of the Tunnel A nozzle at the von Kármán Facility. Periodic maintenance of the facilities is one of the many duties of an instrumentation technician’s duties at Arnold. (U.S. Air Force photo by Deidre Ortiz)

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Photo by: Deidre Ortiz |  VIRIN: 180717-F-AU274-003.JPG