What describes a specialized organizational unit under a MAJCOM?

A field operating agency is a specialized organizational unit under a Major Command (MAJCOM). These agencies are typically responsible for providing support and expertise in specific functional areas, such as logistics, intelligence, or training, and they are designed to operate more autonomously than standard wing or group-level units. The establishment of field operating agencies allows MAJCOMs to centralize resources and streamline operations for better efficiency and effectiveness.

In contrast, other options have different functions within the military structure. An independent group typically focuses on specific missions but retains more of a command structure than a field operating agency. A staff section refers to a functional area within a unit that supports the command through planning and coordination but does not operate independently. A training unit primarily focuses on education and preparedness for personnel rather than acting as a specialized, semi-independent entity within a MAJCOM's overall structure.