Which of the following is NOT a category of nonlethal weapons covered in INIWIC?

The category that is not considered a nonlethal weapon in the context of INIWIC is explosive devices. Nonlethal weapons are designed to incapacitate people or equipment with minimal injury or risk of death, and explosive devices inherently carry the potential for lethality and significant collateral damage. This makes them unsuitable for the classification as nonlethal weapons.

In contrast, chemical agents, impact weapons, and acoustic devices are all categorized under nonlethal weapons because they are specifically intended to minimize harm while achieving their operational goals. Chemical agents can incapacitate or deter through non-lethal means, impact weapons are generally designed to deliver a forceful impact without penetrating or causing fatal injuries, and acoustic devices utilize sound to disorient or deter individuals without causing permanent physical harm. Understanding these distinctions is crucial in the context of nonlethal strategies in conflict and policing environments.