Final answer:
During live fire exercises with smoke grenade launchers, non-participating personnel should not be allowed within the Surface Danger Zone (SDZ) for safety reasons.
Step-by-step explanation:
During live fire exercises with smoke grenade launchers, it is generally not permitted to have non-participating personnel within the Surface Danger Zone (SDZ). The purpose of the SDZ is to ensure the safety of personnel and property by containing potential hazards within a designated area. Allowing non-participants within the SDZ can pose serious risks.
For example, if a smoke grenade were to malfunction or an unintended explosion were to occur, non-participants could be injured or killed. Therefore, it is crucial to strictly enforce regulations and keep non-participating personnel outside the SDZ during live fire exercises with smoke grenade launchers.