1. An Air Force unit composed normally of one primary mission group and the necessary supporting organizations. 2. A fleet air wing is the basic organizational and administrative unit for naval-, land-, and tender-based aviation. 3. A balanced Marine Corps task organization of aircraft groups and squadrons, together with appropriate command, air control, administrative, service, and maintenance units. 4. A flank unit; that part of a military force to the right or left of the main body.