What does concealment in a tactical context typically refer to?

In a tactical context, concealment primarily refers to the act of hiding or obscuring oneself, objects, or information from view to avoid detection by an adversary. This can involve using natural or artificial structures to cover movements or hiding specific items that an opponent should not see. The emphasis on concealment is crucial in various operations, such as law enforcement or military activities, where remaining undetected can be vital for mission success and overall safety.

While the other options discuss different concepts, they do not capture the essence of concealment. A means of protection focuses on defense strategies rather than the act of hiding, a surveillance technique pertains to methods of observing without being seen, and a communication barrier relates to obstacles in conveying information. None of these concepts directly align with the fundamental understanding of concealment as hiding or obscuring visibility.