Berlin Tegel Airport is notable for its hexagonal main terminal building around an open square, which makes walking distances as short as from the aircraft to the terminal exit. The airport was scheduled to close in June 2012 after Berlin Brandenburg Airport (BER) opened, but due to ongoing delays with BER, the future of Tegel is uncertain. A campaign was launched to keep Tegel Airport open, which gathered signatures for a referendum for voters to decide on the future of the airport. While the referendum was non-binding, it did result in a majority of votes cast in favor of keeping Tegel open and
Knox County Regional Airport operated by the City of Rockland until 1968. It was then turned over to Knox County and renamed "Knox County Regional Airport". Since that time, the airport has been developed, the runways expanded, and an Instrument Landing System (ILS) was installed. Knox County Regional Airport covers an area of 538 acres (218 ha) at an elevation of 56 feet (17 m) above mean sea level. It has two asphalt paved runways: 13/31 is 5,007 by 100 feet (1,526 x 30 m) and 3/21 is 4,000 by 100 feet (1,219 x 30 m). For the 12-month period ending July 31, 2010,