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 U.S. Air Force (USAF) provides military dominance in the air and space domains that enables the Joint Force to project power quickly anywhere in the world at any time. The Air Force holds that it must be able to respond rapidly to contingencies and be the first force in the fight.