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.
Air Force. The Air Force is the most recently established branch of the military and was officially established as a separate branch in 1947. Its main purpose is to support the security of the United States through air and space exploitation. It is a main supporter of ground forces by providing air support during missions.