What is a recommended action to protect equipment from contamination before an attack?

Covering equipment using sheltering materials or vegetation is a key action in safeguarding it from contamination prior to an attack. This approach minimizes the exposure of equipment to environmental factors such as dust, debris, chemicals, and other pollutants that could compromise its functionality. Using natural materials like vegetation can also provide a level of camouflage, making it less visible to any potential adversaries while protecting it from direct environmental impacts.

In contrast, leaving equipment exposed to the elements can lead to rapid degradation, making it more susceptible to contamination and damage. Moving equipment inside the main control building may not always be feasible depending on the size and type of equipment and could still leave it vulnerable if the building itself is targeted. Performing routine maintenance checks, while essential for ensuring the operational readiness of the equipment, does not directly address the immediate concern of contamination exposure during a heightened threat situation. It is crucial to prioritize protection measures to maintain the integrity and readiness of vital equipment in advance of potential attacks.