Technical Services Staff is the United States Central Intelligence Agency component responsible for providing supporting gadgets, disguises, forgeries, secret writings, and weapons. In the 1950s and early 1960s it also researched, investigated, and experimented the use of drugs, chemicals, hypnosis, and isolation to extract information during interrogation, as well as to make it easier for American captives to resist interrogation. It is part of the Directorate of Science & Technology. Also called the Office of Technical Services and the Technical Services Division (TSD) or TSS.