Hanscom Field (IATA: BED, ICAO: KBED, FAA LID: BED) (Laurence G. Hanscom Field) is a public use airport operated by the Massachusetts Port Authority, located 14 mi (12 nmi; 23 km) outside Boston in Bedford, Massachusetts, United States. Hanscom is mainly a general aviation airport, the largest in New England. Both runways can accommodate jets, and are used by Hanscom Air Force Base, a defense-research facility next to Hanscom Field. It is a popular training airport, with more than 40 rental aircraft on the field. The Civil Air Terminal building hosts two flight schools. Transient general aviation planes are served by three FBOs: Jet Aviation, Rectrix Aviation, and Signature Flight Support. Federal Aviation Administration records say the airport had 10,956 passenger boardings (enplanements) in calendar year 2017, It is in the National Plan of Integrated Airport Systems for 2011 2015, which called it as a non-primary commercial service airport (between 2,500 and 10,000 enplanements per year). The field serves aircraft from Piper Cubs to Gulfstream V jets. The events of September 11 caused a number of changes to general aviation in the US (see Airport security repercussions due to the September 11 attacks). Hanscom Field saw changes implemented by Massport that included security fees, identification cards, and a requirement for propeller locks.