Which of these checks is NOT part of prefire safety inspections?

The choice of observing the firing range is not typically considered part of prefire safety inspections for equipment like firearms or artillery systems. Prefire safety inspections focus primarily on the mechanical and operational readiness of the weapon or system itself, including checks related to its physical components and security features.

In this context, prefire inspections are crucial for ensuring that specific parts of the equipment are functioning correctly and safely before operation. For example, ensuring the collar locking knob is secure, confirming the block clamp is flushed, and checking the block clamp locking knob's tightness involve verifying that necessary components are properly attached and secured, reducing the risk of malfunctions during use.

In contrast, observing the firing range is more about ensuring overall safety in the broader environment where the firing will take place, which is not within the technical inspection of the weapon system itself. This step is relevant to range safety protocols but does not fit the checklist for inspecting the equipment before use.