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.
The senior headquarters of the Air Force, consisting of two major entities: the Secretariat (including the Secretary of the Air Force and the Secretary's principal staff), and the Air Staff, headed by the Chief of Staff, USAF. subdivision of the Air Force, directly subordinate to a HQ USAF functional manager. An FOA performs field activities beyond the scope of any of the major commands. The activities are specialized or associated with an Air Force wide mission.