Directorate for Science and Technology: The Directorate for Science and Technology manages DIA's technical assets and personnel. These assets gather and analyze Measurement and Signature Intelligence, which is a technical intelligence discipline that serves to detect, track, identify or describe the signatures (distinctive characteristics) of fixed or dynamic target sources. This often includes radar intelligence, acoustic intelligence, nuclear intelligence, and chemical and biological intelligence. DIA is designated the national manager for MASINT collection within the United States Intelligence Community, coordinating all MASINT gathering across agencies. DIA is also the national manager of the Joint Worldwide Intelligence Communications System (JWICS), the central Top Secret/Sensitive Compartmented Information (TS/SCI) processing network for the United States, and Stone Ghost, a network for US and partner nations.