What is an important safety consideration when using CETK equipment?

Using CETK (Counter-Explosive Tool Kit) equipment safely is paramount to preventing accidents and ensuring effective operations. The correct answer highlights that CETK should not be used near any flammable materials. This consideration is crucial because many components of CETK equipment, when in operation, can produce sparks or heat that may ignite flammable substances. Awareness of the surrounding environment is essential to mitigate risks during explosive device detection or disarmament operations, where flammable materials might be present.

The other choices represent considerations that do not align with best safety practices. While environmental conditions and equipment compatibility are important, the specific prohibition against using CETK near flammable materials directly addresses a significant safety hazard that could lead to catastrophic consequences if neglected. This understanding of the potential dangers is critical for personnel who operate CETK equipment in the field.