Defending the cyberspace
Tech. Sgt. Carl Williams, 747th Cyberspace Squadron standards and evaluations craftsman, observes radio frequencies recorded by a stand-alone hub activity reconnaissance kit in a C-17 Globemaster III around the Hawaiian Islands, Nov. 3, 2021. The kit is to be able to detect and cancel radio frequency jamming. (U.S. Air Force photo by Staff Sgt. Alan Ricker)
24.0-70.0 mm f/2.8
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