Cyber Fortress 26 tests military, civilian experts on domestic cyber-attack scenarios [Image 3 of 6]

Military and civilian cyber experts from across the country participate in a tabletop exercise led by the Cybersecurity and Infrastructure Security Agency July 31, 2026, during Cyber Fortress 26 at the State Military Reservation in Virginia Beach, Virginia. Hosted by the Virginia Army National Guard’s 91st Cyber Brigade, Cyber Fortress is one of the nation's premier military exercises focused on a whole-of-government response to significant cyber threats impacting critical infrastructure and key resources, and the only Army National Guard cyberspace operations exercise that includes capability certification or re-certification. This year’s exercise scenario focused on hydroelectricity and brought together Active, Reserve, and National Guard components of the U.S. military and NATO partners, as well as local, state, and federal government agencies and civilian partners from private industry. (U.S. National Guard photo by A.J. Coyne)

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Cyber Fortress 26 tests military, civilian experts on domestic cyber-attack scenarios