What movement should be used when cover or concealment is accessible?

The high crawl is the most appropriate movement to use when cover or concealment is accessible. This technique allows a Marine to maintain a low profile while also being able to move quickly and efficiently. The high crawl involves keeping the body low to the ground but not completely flat, which provides the benefit of using the surrounding terrain for cover. It allows for quick reconnaissance and movement from one point to another while minimizing exposure to potential threats.

Using concealment effectively is crucial in tactical situations, as it can help to avoid detection from the enemy. The high crawl strikes a balance by permitting movement at a reasonable speed while still utilizing available cover, making it ideal for scenarios where stealth and speed are necessary. It ensures that the individual remains less vulnerable while navigating through potentially hostile environments.