Final answer:
Contamination prevention actions, such as covering facilities, limiting entry, and detecting contaminants, are important to prevent CBRN contamination of mission-essential resources.
Step-by-step explanation:
Contamination prevention actions aim to prevent chemical, biological, radiological, and nuclear (CBRN) contamination of mission-essential resources. These actions include covering and limiting entry to facilities, as well as detecting and identifying contaminants.
For example, covering facilities helps to prevent contaminants from entering and spreading within the area. Limiting entry to facilities ensures that only authorized personnel can enter and reduce the risk of contamination. Detecting and identifying contaminants involves using monitoring systems and tests to identify any potential threats.