Which technique is specifically aimed at maintaining noise discipline during communications?

• A. Avoid unnecessary vehicular and foot movement.
• B. Secure metal parts to prevent noise.
• C. Do not restrict moving parts of weapons.
• D. Use radios only when necessary and keep the volume low.

Answer: (D)

Controlling sound from communications is about keeping the channel quiet so you don’t reveal presence or drain attention. Using radios only when necessary and keeping the volume low directly reduces audible signals that can be heard at a distance, helping maintain stealth and prevent unnecessary chatter from giving away positions or intentions. This approach also supports efficient, deliberate transmissions—short, essential messages that minimize exposure and interference with others.

Other practices may relate to staying discreet, such as avoiding extra movement or reducing incidental gear noises, or they concern weapon handling, but they don’t address the specific goal of keeping communication noise at a minimum.