Which regulation governs the use, returns, and disposal of government materials?

The regulation that governs the use, returns, and disposal of government materials is indeed DAFI 23-101. This directive specifically outlines the policies and procedures related to the management of supply and material accountability within the Department of the Air Force. It addresses how materials should be utilized responsibly, returned to inventory if no longer needed, and disposed of in compliance with environmental and regulatory standards. Understanding this regulation is crucial for personnel managing government resources, as it ensures compliance with legal and operational requirements while promoting efficient use and accountability of materials.

In contrast, the other options focus on different aspects of regulations: AFI 36-2903 pertains to dress and personal appearance standards, AFMAN 33-152 deals with communications and information management, and AFI 21-101 addresses aircraft and equipment maintenance management. Thus, while all these regulations are important within their respective contexts, DAFI 23-101 is uniquely focused on the lifecycle management of government materials.