Which organization is the single manager for air transportation between points in the United States and overseas?

The US Air Force's Air Mobility Command (AMC) serves as the single manager for air transportation from points within the United States to overseas locations. AMC is responsible for managing airlift operations and ensuring that military personnel and cargo can be effectively transported across large distances. The command incorporates both strategic airlift, which involves long-range missions to move cargo and troops, and tactical airlift, which is focused on shorter-distance operations.

This role is essential for maintaining operational readiness and ensuring that military units can be deployed rapidly in response to a wide variety of global situations. Through its extensive network, AMC coordinates air transportation logistics and provides critical support to other military branches and agencies, streamlining the airlift process and enhancing inter-service collaboration.

In contrast, the other options either focus on different modes of transportation, like land or sea, or serve specific logistical functions that do not encompass the broader scope of air transportation management.