U.S. Air Force Staff Sgt. Fabian Hernandez, an integrated communication/navigation mission systems specialist assigned to the 182nd Maintenance Squadron, Illinois Air National Guard, inspects equipment in a C-130H Hercules at the 182nd Airlift Wing in Peoria, Ill., March 20, 2019. Hernandez diagnoses malfunctions using technical orders, schematics, wiring diagrams, built-in test procedures and other test equipment. (U.S. Air National Guard photo by Airman Wynndermere Shaw)

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Photo by: Airman Wynndermere Shaw |  VIRIN: 190320-Z-UY850-1124.JPG