The U. S. Air Force (USAF) Tactical Air Control Party (TACP) is the principle USAF liaison element to the United States Army (USA) provided in accordance with the Memorandum of Agreement between the USAF and the USA for the Exchange of Liaisons. In this context, the TACP is a USAF liaison element aligned with Army combat maneuver echelons from corps to battalion. The TACP provides its aligned Army unit with expertise in planning and executing airpower in support of the land component commander's scheme of maneuver. The term "TACP" also refers to the Air Force Specialty Code (AFSC) 1C4X1, which is the core AFSC within a TACP element. Note: The USMC TACP consists of USMC personnel who support USMC units.