A network of 58 facilities across the U.S. operated by the U.S. Department of Transportation, Federal Aviation Administration (FAA). These stations are part of the FAA air traffic system and are staffed by uniquely trained air traffic control specialists. The primary role of an AFSS is to provide weather briefings and flight planning services to pilots, and is responsible for collecting, processing, and delivering aeronautical and meteorological information to promote safe and expeditious flight.. These facilities are used primarily by the general aviation community; however, military and commercial pilots are also frequent customers.