Which agency develops command supplements or directives for implementation?

The Major Command (MAJCOM) is responsible for developing command supplements or directives that support the unique missions of the Air Force. These supplements are tailored to the specific needs of the command and ensure that policies, procedures, and guidance align with Air Force regulations and operational requirements. MAJCOMs play a critical role in translating high-level directives from the Air Force into actionable plans within their respective areas, thus facilitating effective command and control, resource management, and mission execution.

While the other agencies listed also participate in various aspects of logistics and supply chain management within the Department of Defense, they do not have the primary authority or responsibility for creating command-level directives that shape the operational strategies of the Air Force. The Air Force Command Center, for instance, focuses more on operations and readiness rather than directive development. Similarly, the Logistics Support Agency and the Defense Supply Agency handle logistics issues and supply support but do not directly issue command supplements.