U.S. Northern Command Commander U.S. Air Force Gen. Glen D. VanHerck speaks during a press briefing about the completed global information dominance experiment (GIDE) 3, at the Pentagon, Washington, D.C., July 28, 2021. (DoD photo by U.S. Air Force Staff Sgt. Brittany A. Chase) Northcom chief sounds alarm over ‘unknowns’ in cyber domain “Candidly, I worry a lot about the cyber domain and the unknowns in the cyber domain," Gen. Glen VanHerck said. Nov 15, 2023 By Mikayla Easley