What should be included in the drill steps during a DG spillage?

In the context of handling dangerous goods (DG) spills, it is crucial to prioritize safety and minimize risk. Frequent inspection of stowed items plays a vital role in this response. By regularly checking the status of stowed items, crew members can ensure that no additional hazardous situations arise from improperly stored materials or cargo. This vigilance helps to maintain an organized and safe environment, preventing further incidents or complications that could escalate the situation.

Addressing the other choices, notifying airport security is important but does not fall directly under the immediate drill steps necessary during a spillage. Collecting personal belongings of passengers can create additional hazards and distractions during an emergency response. Using wet towels to clean up is also not advisable as it may spread the hazardous substance, thus compromising safety. Regular inspection of stowed items, however, ensures readiness and facilitates prompt and effective action during an incident involving dangerous goods.