What is a common way to hinder a crew member's ability to operate effectively at night?

Shining a headlight into a crew member's eyes is a common way to hinder their ability to operate effectively at night because it can temporarily blind them or impair their night vision. This direct exposure to bright light disrupts their ability to see the surrounding environment clearly, which is crucial for safety and navigation in low-visibility conditions. Night vision relies on the eyes adjusting to darkness after being exposed to bright light, a process that can take time. By disorienting a crew member in this way, they may lose situational awareness and be unable to respond effectively to their duties or any potential hazards. This tactic is particularly effective in a search and rescue scenario where clear vision is essential for making quick decisions and actions.