soldier, modern warfare, Call of Duty, MW3, weapon vault, assault rifle, tactical gear, military uniform, crouching position, secure stance, concrete bunker, ammunition boxes, organized shelves, metal structure, dim lighting, overhead fluorescent lights, steel door, gun rack, variety of firearms, grenades on belt, intense expression, action-ready posture, camo paint, night vision goggles, bulletproof vest, combat boots, gripping weapon, alert stance, indoor military facility, high-security area, close-up shot, detailed texture, 3/4 view, dramatic shadows.