U.S. Air Force Capt. Miguel Rosario, a cyber operator assigned to the 276th Cyber Operations Squadron, Maryland Air National Guard, works on his computer at home September 8, 2020, before participating in the Cyber Shield exercise. 800 National Guard cyber operators from more than 40 states and territories participated in Cyber Shield 20, a virtual training exercise designed to build their skills defending networks. (Courtesy Photo)
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