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.
Major Duties: Performs as a musician or in direct support of the mission of The U.S. Army Band, U.S. Army Field Band, U.S. Military Academy Band, or the 3rd Infantry (The Old Guard) Fife and Drum Corps. Skill Level 3 Performs as instrumentalist or vocalist in field music detachment or special band.