sentences:  Transcontinental & Western Air used the modification center for aircraft servicing until the Great Flood of 1951, and in January 1947 four new factories were under construction.In 1960 GM bought the former Air Force Plant it had been leasing since 1945 and then constructed a new 1985 factory when the airport closed.An annexation ordinance expanded the city limits to encompass the "United States Government [area of] 2 acres" and the airport's with 13 buildings—the "Fairfax plat" was the area within the northeast corner of the Fairfax Industrial District of ~.