An Air Operations Center (AOC) is a type of command center used by the United States Air Force (USAF). It is the senior agency of the Air Force component commander to provide command and control of air operations. An AOC is the senior element of the Theater Air Control System (TACS). The Joint Force Commander (JFC) assigns a Joint Forces Air Component Commander (JFACC) to lead the AOC weapon system. If allied or coalition forces are part of the operation, the JFC and JFACC will be redesignated as the CFC and CFACC, respectively.