Proper posture starts with a good understanding of the muscles that are involved in posture. Several different muscles are responsible for maintaining upright posture, and over time, poor posture can cause these muscles to lose strength.
Air Force. A major in the Air Force typically has duties as a senior staff officer at the squadron and wing level. In flying squadrons majors are generally flight commanders or assistant directors of operations. In the mission support and maintenance groups majors may occasionally be squadron commanders.
that they must be carried out through a combination of line and staff functions. MAJOR MILITARY FUNCTION - The military equivalent of a civilian program, e.g., development of a major weapons system such as the Trident submarine, or an ongoing function such as defense intelligence, when such long range or continuing functions are otherwise