When should structural firefighting tactics be avoided around munitions?

Structural firefighting tactics should be avoided around munitions primarily whenever there is a risk of munitions ignition or explosion. This is critical because munitions are designed to detonate under certain conditions, and introducing water or chemical agents commonly used in structural firefighting can inadvertently trigger a dangerous reaction. The safety of personnel and the prevention of unintended detonations are paramount when handling environments where munitions are present.

In situations where there is a potential threat to munitions, such as exposure to heat, chemical reactions from suppressants, or physical disturbances, it is essential to prioritize alternative firefighting strategies that do not compromise the stability of the munitions. Firefighters must assess the risk of ignition and follow specific protocols tailored to munitions firefighting, which often involve fire prevention and suppression methods designed not to disturb munitions.

Regarding the other options, having trained personnel present does not negate the risks associated with munitions. Class C fires pertain specifically to electrical fires and do not encompass the broader dangers posed by munitions. Equipment unavailability is a logistical issue, but it doesn't directly address the risks inherent in firefighting around munitions. The decisive factor remains the inherent risk of ignition and explosion linked to the