What does Distance X refer to in range safety?

Distance X refers to the maximum distance a projectile will travel when fired at a given elevation. This concept is crucial for ensuring safety during live-fire exercises and understanding how far ammunition can potentially travel. Properly assessing Distance X allows Range Safety Officers to establish appropriate safety zones and create a safe environment for personnel.

By understanding the ballistic characteristics of the ammunition in use, RSOs can forecast the effective range and potential trajectory of the projectiles. This information is vital in preventing accidents and ensuring that all personnel, equipment, and structures outside of the designated range are safeguarded from stray rounds. The other choices, while related to projectile behavior and range safety, do not accurately define Distance X in the context of range operations.