Which signaling method is most compatible with night vision devices?

• A. Hand signals with a silent code and the use of low-signature lights or IR signals compatible with night vision.
• B. Verbal radio calls on standard channels.
• C. Bright white strobes visible at long range.
• D. Flags used in daylight operations only.

Answer: (B)

In night operations, signals must stay covert and compatible with how night vision devices amplify light. The best approach is silent, coded hand signals for immediate coordination at close range, supported by low-signature lighting or infrared signals that night vision gear can detect without exposing you to others who aren’t using NVGs. Verbal radio calls on standard channels, while useful in some situations, produce audible traffic that can reveal your position or be intercepted, reducing stealth. Bright white strobes are too conspicuous and can saturate night vision, giving away your location, and flags used in daylight operations offer no value at night because they’re not visible in the dark.