Which plan is primarily developed for locations with a permanent Air Force presence?

The most appropriate choice for locations with a permanent Air Force presence is the Base Support Plan. This plan is specifically designed to outline the support infrastructure and resources available at bases where the Air Force operates year-round. It includes details about facilities, equipment, personnel, and logistics that are essential for sustaining operations in a stable environment.

In contrast, the other options focus on different operational contexts. The Expeditionary Site Plan is typically created for temporary or deployed locations, not permanent installations. The Expeditionary Site Survey Process is a procedure used to assess potential sites for operations, which is more relevant in the planning stages for deployments rather than ongoing base support. Lastly, the Contingency Operations Plan is geared toward unexpected or emergency situations, detailing how to respond to crises, further distinguishing it from the everyday support needs of a permanent base.

By understanding the nature and focus of these plans, it becomes clear that the Base Support Plan is tailored for the established needs of an Air Force installation with a continuous presence.