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.
USAF Special Operations. United States Air Force Special Operations are carried out by a range of units with a number of different roles. AFSOC. The majority of USAF Special Operations Forces come under control of the Air Force Special Operations Command (AFSOC). These Air Commandos operate fleets of specialised aircraft on a variety of missions.