Which facility is classified as a PL1 resource at Osan AB?

The System Control Facility, also known as Building 949, is classified as a PL1 (Priority Level 1) resource at Osan Air Base due to its critical role in operations and mission capabilities. PL1 resources are those that, if compromised or lost, could result in catastrophic consequences for national security, often impacting the operational readiness and effective functioning of military forces.

The primary reason for this classification is that the System Control Facility houses vital systems and data necessary for command and control operations. Compromising this facility can severely hinder situational awareness and the execution of military operations, making it essential for security measures to be robust and comprehensive.

In contrast, while the other facilities listed may be important to the overall functioning of the base—such as the logistics support center which handles supplies, the medical center providing healthcare, and the civil engineering complex responsible for infrastructure—they do not have the same direct impact on operational readiness and mission success that the System Control Facility does. Thus, it is specifically the nature and sensitivity of the operations conducted within the System Control Facility that earns it the PL1 classification.