Which action is NOT performed during MOPP level 3 Ashore?

The action that is not performed during MOPP level 3 ashore is installing filters. At MOPP level 3, personnel are required to take specific protective actions in preparation for a chemical or biological threat, but the installation of filters is typically associated with a higher MOPP level, such as level 4, where personnel must be fully equipped to handle imminent contamination threats.

During MOPP level 3, the focus is on ensuring that individuals are prepared and capable of responding to contamination, which includes actions such as filling canteens for hydration, activating decon stations for potential decontamination of personnel, and donning over boots for additional protection. These measures enhance readiness and safety without fully donning all protective gear, which the installation of filters would require. Thus, the installation of filters is not part of the necessary actions at MOPP level 3 ashore, aligning with the intent and guidelines established for this readiness level.