What additional safety measure may be used when securing palletised cargo?

Choosing specialized fire containment blankets as an additional safety measure for securing palletized cargo is crucial due to the potential risk of fire in aircraft cargo holds. These blankets are designed to suppress and contain fires, protecting not only the cargo but also contributing to overall aircraft safety. In scenarios where hazardous materials or cargo with elevated fire risks are present, these blankets can provide an essential layer of protection.

The other options, while important in their own right, serve different purposes. For instance, weight distribution charts are vital for ensuring the aircraft's balance and aerodynamics but do not directly address fire safety. Visual inspections by ground crew help in identifying physical issues with the cargo and securing it properly, but they do not prevent fires. Temperature regulation devices are important for managing the condition of sensitive cargo but would not specifically mitigate a fire once it has started. Thus, specialized fire containment blankets are the key measure that directly enhances safety regarding fire risks associated with palletized cargo.