The Unified Command Plan (UCP), which is approved by the President, establishes missions, responsibilities, and force structure of the unified combatant commanders; delineates the general geographical Area of Responsibility (AOR) for the Geographic Combatant Commanders (GCC); and specifies functional responsibilities for Functional Combatant Commanders (FCC).  The UCP and the National Security Strategy (NSS) are components of U.S. Grand Strategy (JOH, 2011).