Final answer:
The safe separation distance when firing blank small arms and machine gun ammunition is generally at least 5 meters or 16 feet.
Step-by-step explanation:
In firing blank small arms and machine gun ammunition, it is important to maintain a safe separation distance to ensure the safety of those involved. The exact safe separation distance will depend on various factors, including the type of ammunition being used and the specific situation. However, a general guideline is to maintain a minimum safe separation distance of at least 5 meters or 16 feet.