. "NVGs" . "Night-vision goggles" . "Night optics" . "night vision googles" . "NVG" . "night-vision device" . "first generation night vision" . . "Night vision device" . "night vision sensors" . "night vision technology" . "night-vision devices" . "passive night goggles" . . . . "Night vision devices" . "night vision sights" . . "Night Vision Device" . "night vision device" . "Trifocal goggle" . "night-vision equipment" . . . . "US M2 Sniperscope" . "Night vision scopes" . "night-vision and sonar goggle" . "night-vision" . "night goggles" . "Night Vision Devices" . "night vision devices" . "night-vision goggle" . "Night Vision" . . . "NVD" . . "night sights" . "Night Vision Goggles" . "night-vision cameras" . "Night-vision" . "Night Vision Equipment" . "night vision glasses" . "night vision equipment" . . . . "night-vision goggles" . "third-generation" . "Night-vision device" . "Night-vision device" . . "Night Observation Device" . "NVDs" . "second generation night vision" . "night vision goggle" . "night vision goggles" . "night vision" . "night-vision system" . . "trigoggle" .