TECHNICAL SERGEANT (TSGT) TSgts are qualified to perform highly complex technical duties in addition to providing responsible supervision. They are responsible for the development of all enlisted personnel under their supervision. They must obtain maximum performance from each subordinate and ensure the product or service is of the quality necessary for total mission effectiveness. TSgts will continuously strive to broaden and perfect their professional expertise and supervisory techniques. The official term of address is Technical Sergeant or Sergeant.