. "night viewing" . "night operations" . "active infrared night vision" . "night vision system" . "Night vision#Active illumination" . "thermal vision" . . "night vision" . "Active infrared night vision" . "Active Infrared" . . "active night vision" . "night vision technology" . "Infrared illuminator" . . "Night vision#Biological night vision" . "Night vision" . "vision at night" . "Active systems" . "night vision binoculars" . "Night Patrol" . "night vision device" . "blind" . . . "night-capable" . "Night vision" . "night/heat vision goggles" . . "Night vision#Night vision devices" . "vision in low light" . . "night vision cameras" . . "night vision devices" . "infrared" . . "night-vision" . "Night_vision#Active_illumination" . "night fighting equipment" . . "night" . "night vision equipment" . . "nocturnal vision" . "night sight" . "Nite-Vision cameras" . "low-light" . . "active infrared" . "night vision goggles" . "equipment" . "Night Vision" . "thermal imager" . .