Which category does not fall under DDA authority?

The category that does not fall under DDA authority is live-fire training exercises. The primary reason for this distinction is that live-fire exercises are integral to military training and operational readiness, and they typically occur in designated training areas or ranges that are specifically managed for such activities. The DDA (Defense Disposal Authority) regulates the disposal of munitions and explosives but does not have authority over the training operations involving live munitions, as these are part of the fundamental responsibilities of military units to maintain their operational capabilities.

In contrast, the other categories involve munitions that need specific disposal procedures under DDA authority. Used munitions for disposal entails items that are no longer needed and must be safely destroyed. Excess explosives from training refers to any surplus material that cannot be used and must be managed according to specific disposal guidelines. Unserviceable munitions are items that are inoperable and also require disposal through DDA channels to ensure safety and compliance with regulations.