sentences:  The 618th AOC (TACC) is responsible for planning, scheduling, and tracking aircraft performing airlift, aerial refueling, and aeromedical evacuation operations around the world.It serves as an Air Operations Center (AOC) for 18AF/AFTRANS, executing missions assigned by the United States Transportation Command (USTRANSCOM).Within the United States Department of Defense, the United States Transportation Command (USTRANSCOM) is responsible for providing air, land, and sea transportation.