The Aviation and Space Weather Services Branch is the programmatic lead for the aviation and space weather services programs. Branch programs include products and services provided to the domestic and international aviation communities in the terminal, en route, and oceanic airspace systems. Program services include airport warnings, Terminal Aerodrome Forecasts (TAF), en route forecasts and warnings (e.g., SIGMETS and AIRMETS), aviation area forecasts, In-flight Advisories, volcanic ash advisories and the operations and products of the Volcanic Ash Advisory Center (VAAC), and the Center Weather Service Units (CWSU) which is embedded in each of the 21 Air Route Traffic Control Centers. The Branch is the primary focal point for collaboration on the provision and dissemination of aviation weather services with: The Federal Aviation Administration (FAA); The International Civil Aviation Organization (ICAO); and The World Meteorological Organization (WMO). It is the primary focal point for collaboration with the OCLO to identify and ensure aviation forecast training needs are met. It leads or participates on service-oriented Integrated Work Teams to prioritize development of relevant science and technology solutions to program requirements; approve new or improved product designs; and ensure the collection of aviation observations and the delivery of aviation products to users. The Branch oversees the provision of aviation weather products and services from WFOs, CWSUs, NCEP´s Aviation Weather Center, and the Alaska Aviation Weather Unit. It develops, coordinates, and issues the policy and procedure documents for NWS aviation and space weather operations. The Branch establishes partnerships internally and externally to collect and validate aviation and space weather service and mission needs, solicit feedback on its products and services, and evaluate whether they meet the needs. In collaboration with the Space Weather Prediction Center, the branch program also includes space weather products and services provided to domestic and international customers, including government agencies, academia, commercial providers, and private industry, including electric power, satellite, aviation, and navigation. The Branch serves as a focal point for collaboration on space weather plans, products, services, and outreach with NESDIS, National Aeronautics and Space Administration (NASA), Department of Defense (DOD), National Science Foundation (NSF), U.S. Geological Survey (USGS), Department of Transportation (DOT), Department of State (DOS), Department of Homeland Security (DHS), Department of Energy (DOE), and the White House Office of Science and Technology Policy.