How is local security primarily achieved within a squad?

Local security within a squad is primarily achieved through enforcing noise and light discipline. This practice is crucial in maintaining stealth and operational security, which allows the squad to remain undetected by enemy forces. By minimizing noise and controlling light emission, the squad can prevent drawing attention to their position, thus reducing the likelihood of an enemy attack.

Additionally, enforcing noise and light discipline contributes to the overall effectiveness of the squad's defensive posture and situational awareness. It ensures that members can communicate vital information without revealing their location, and it enhances their ability to monitor the surrounding area for potential threats. In contrast to other methods, such as making loud noises or resting during quiet times, which may compromise security, noise and light discipline directly supports the squad's primary objective of maintaining a low profile in potentially hostile environments.