Military operations in the 21st century are highly complex and require detailed planning across components to be both effective and efficient. Recent conflicts have demonstrated the need for airspace control in varying levels of conflict, from major operations and campaigns to stability operations. We share airspace during military operations with civil users, nongovernmental organizations, coalition military forces, and host nation users. We must ensure the safety of all users, even if combat operations are ongoing while civil aviation continues. The doctrine outlined in this document enables combat effectiveness while promoting the safe, efficient, and flexible use of airspace with a minimum of restraint placed upon airspace users. Our doctrine for airspace control rests upon the Air Force tenet of centralized control and decentralized execution. The Air Force theater air control system provides the commander, Air Force forces the ability to conduct theater-wide air operations and typically forms the backbone of the theater air ground system. This system integrates the efforts of all components to maximize the efficiency of air operations throughout the theater. The joint force commander (JFC) normally designates the commander of Air Force forces as the joint force air component commander, airspace control authority, and area air defense commander. The air component commander, as the airspace control authority, develops the airspace control plan (ACP) on behalf of the JFC. The airspace control authority cannot restrict combat operations by other components. However, should the JFC decide to enact restrictions on air operations during certain phases of the operation, the ACP will detail those restrictions. The ACP, when signed by the JFC, contains policies and procedures that flow directly from the JFC's authority. Our doctrine is broadly stated to fit varying levels of contingencies and diverse geographical areas, while encompassing joint and multinational operations. Study it, discuss it, and be ready to recommend improvements to it based upon your unique experiences. We must be able to articulate the unique contributions Airmen make to provide a safe, reliable, and flexible environment for all friendly airspace users. Air Force Doctrine Document (AFDD) 3-52, Airspace Control, is the Air Force's foundational doctrinal publication on Air Force airspace control operations and organization. AFDD 3-52 presents Air Force-sanctioned ideas, lessons learned, and best practices to help Airmen conceptualize and articulate their role in airspace control operations. The publication introduces and develops the Air Force's role in integrating controlling agencies and joint airspace users into the theater-wide mission of the joint force commander. It establishes the foundations for developing Air Force education on airspace control and the subsequent development of sound tactics, techniques, and procedures.