1.20.1. From Kitty Hawk to Afghanistan, the record of air and space power emphasizes powerful themes. The interplay of doctrine, technology, tactics, and strategy must be sustained by training, logistics, supply, and support infrastructure. Although history may not provide hard and fast lessons, it offers inspiration, insight, and examples to spur your thinking. Today’s Airmen draw from a proud heritage of sacrifice, valor, and success. Just as our predecessors triumphed over thechallenges at St. Mihiel, Schweinfurt, and MiG Alley, you will face new challenges with courage, skill, innovation, and perseverance.