States the most fundamental and enduring beliefs that describe and guide the proper use, presentation, and organisation of air and space forces in military action. It describes the "elemental properties" of air and space power and provides the Airman's perspective. Because of its fundamental and enduring character, basic doctrine provides broad and continuing guidance on how Air Force forces are organized, employed, equipped, and sustained. Because it expresses broad, enduring fundamentals, basic doctrine changes relatively slowly compared to the other levels of doctrine. As the foundation of all air and space doctrine, basic doctrine also sets the tone and vision for doctrine development for the future. AFDD 1 is the Airman's basic doctrine.