Joint Forces Air Component Commander (JFACC) is a United States Department of Defense doctrinal term. It is pronounced "Jay-Fack".
It refers to a senior officer who is responsible for the air forces within a joint force; i.e., a military force composed of forces from two or more military departments. The term "air forces" encompasses aircraft from any service not already designated to specifically support ground forces (e.g., a marine air wing as part of a MAGTF or "organic" Army aviation assets).
The tool by which the JFACC tasks assets is called an air tasking order (ATO).
As defined in Joint Publication 1-02, the JFACC is:
"The commander within a unified command, subordinate unified command, or joint task force responsible to the establishing commander for making recommendations on the proper employment of assigned, attached, and/or made available for tasking air forces; planning and coordinating air operations; or accomplishing such operational missions as may be assigned. The joint force air component commander is given the authority necessary to accomplish missions and tasks assigned by the establishing commander."