Final answer:
The Air and Space Expeditionary Force (AEF) provides forces and support on a rotational basis.
Step-by-step explanation:
The mechanism for managing and scheduling forces for expeditionary use is the Air and Space Expeditionary Force (AEF). It provides forces and support on a rotational basis. This means that different units and personnel are assigned to the AEF for a fixed period of time, typically six months to one year, before being replaced by another unit or personnel. This rotation ensures a continuous presence and readiness of forces for expeditionary missions.