Which of the following demonstrates sound light discipline?

• A. Concealing light sources, covering reflective surfaces, using natural concealment
• B. Turning on IR beacons
• C. Using bright signals to communicate
• D. Leaving lights on

Answer: (A)

Managing light signatures is about not giving away your position. Sound light discipline means minimizing any visible or detectable light, avoiding reflections, and using terrain to stay hidden. The best demonstration is concealing light sources, covering reflective surfaces, and using natural concealment, because it directly reduces what an observer could see or detect and keeps you hidden in the environment. Turning on infrared beacons can still be detected by night-vision or IR sensors, revealing your presence even if it isn’t visible to the naked eye. Using bright signals to communicate draws attention and makes you easy to spot from a distance. Leaving lights on guarantees you can be seen, wastes energy, and undermines stealth. The first approach aligns with the goal of staying covert by preventing light signatures from rising above the background.