Which of the following is NOT a type of SDZ?

The correct answer is that "Round" is not a type of Safety Danger Zone (SDZ). In the context of military training and range operations, Safety Danger Zones are established to provide a safe area around a given firing point where weapons may cause danger.

The "Cone," "Batwing," and "Laser" types of SDZs are all recognized patterns used to delineate areas where potential danger exists due to the trajectory of projectiles or the effects of certain weapon systems. For example, a "Cone" SDZ is typically used for direct fire weapons to account for the area affected by the bullet's trajectory at various distances. The "Batwing" is a more complex shape used for certain artillery or indirect fire situations, designed to encompass both horizontal and vertical dispersion of projectiles. "Laser" SDZs are defined for the use of targeting lasers and consider the potential hazards of laser emissions.

In contrast, "Round" does not correspond to an established form of SDZ as recognized in military doctrine, making it the correct answer to the question. Understanding these classifications is vital for maintaining safety during live-fire exercises and ensuring that all personnel are aware of potential risks.