Book excerpt: n this extremely comprehensive overview of airlift and air mobility, Colonel Miller shows how the worldwide orientation of American foreign policy, the numerous threats to free-world interests, and the speed and complexity of modern warfare have combined with political and resource constraints to produce today's airlift doctrine and force structure. Airlift is the movement of goods and people to where they are needed, when they are needed there. Since the 1920s there has been an evolving awareness and articulation of how to best organize, train, and equip airlift forces for that mission. The worldwide orientation of American foreign policy, the numerous threats to free world interests, and the speed and complexity of modern warfare have combined with political and resource constraints to produce today's airlift doctrine and force structure. Colonel Miller's study traces these many interrelationships to discover what critical airlift decisions were made, why they were made, and what they may mean in the future. Airlift is the backbone of deterrence. A properly structured and equipped airlift force is critical to the successful execution of the national military strategy. How we think about airlift and how we translate those thoughts into a meaningful expression of how to develop, deploy, and employ airlift forces is vital to the national defense. Colonel Miller's study is a definitive step in that important process.