Beacon Field Airport was an airport located in the Groveton area of Fairfax County, Virginia, from the 1920s until its closure in 1959. One of the nation's earliest private airports, and particularly in the Washington DC Metropolitan Area, it received its name because it was the location of an airway beacon used to guide early airmail pilots. It later became a popular training site, complete with FBO, for pilots learning to fly after World War II on the G.I.