What does the Lieutenant need to ensure when preparing for a cell extraction?

When preparing for a cell extraction, it is crucial for the Lieutenant to ensure that medical personnel are present during the extraction. The presence of medical staff is vital as it allows for immediate assessment and care in the event that an inmate becomes injured or requires medical attention during the extraction process. This proactive measure is part of ensuring the safety and health of both the inmates and the staff involved in the extraction.

The other options, while they may address important considerations before a cell extraction, do not carry the same level of immediate necessity for the health and safety of individuals involved. Securing inmate properties, informing staff about the extraction location, and ensuring that inmates are in solitary confinement are all elements of the planning process, but they do not directly address the critical need for medical oversight during the actual extraction, which can be unpredictable and potentially dangerous.