Which source of supply allows items to be made according to the customer's specifications?

Local manufacture is the appropriate source of supply for items that need to be made according to the customer's specifications. This option allows for customization and adaptation of products to meet specific requirements laid out by the requesting entity. When items are locally manufactured, there is flexibility in design, materials, and functionality, ensuring that they align with the precise needs of the end user.

In contrast, other options such as the Defense Logistics Agency (DLA) and the Air Force Supply Chain Management typically handle standardized items that may not allow for tailored specifications. Similarly, Base Supply often deals with requisitioning existing stock rather than creating new items based on specific customer needs. Thus, local manufacture stands out as the source that directly addresses the capacity to produce items according to unique specifications.