Government building, Department of Defense, Zero Trust Reference Architecture, modern sleek architecture, glass walls, metallic frames, futuristic interior design, rows of computers, complex networks, high-tech security systems, screens displaying real-time data, dark suits, formal attire, serious facial expressions, officials discussing in a conference room, wooden tables, leather chairs, softbox lighting, atmospheric mist, subtle fog effect, 3/4 composition, cinematic mood, high-angle shot, symmetrical framing.