U.S. Air Force Senior Airman Robert Matthews, 19th Aircraft Maintenance Squadron communication and navigation systems electronic counter measures journeyman, performs a radio operations check at Little Rock Air Force Base, Arkansas, Sep. 4, 2019. Matthews works on the multiple aircraft systems including radios, navigation systems, and equipment. (U.S. Air Force photo by Airman 1st Class Mariam K. Springs)
24.0-70.0 mm f/2.8
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