What method of support is used when the Air Force merges resources of the host and tenant?

The correct answer revolves around the concept of functional consolidation, which refers to the integration of resources, functions, and operations between a host and tenant unit. In the context of the Air Force, this process involves merging capabilities and responsibilities to enhance efficiency, streamline operations, and optimize resource allocation between different entities.

Functional consolidation allows for better coordination and the ability to leverage shared assets to meet joint mission requirements effectively. This method promotes unity of effort and maximizes the versatility of available resources, which can be particularly beneficial in environments where budgetary constraints may limit individual unit capabilities.

Understanding this method underscores the importance of collaborative operational frameworks in military settings, where various activities can be more effectively managed through a well-defined structure of shared functions. Conversely, the other options like joint use deal primarily with facilities or programs operated collectively but not necessarily the internal merging of resources as seen in functional consolidation.