from the nearby Rochester Airport. Military Aviation was widespread throughout the county, with the embryonic Royal Air Force at Biggin Hill and the Navy at Manston, near Ramsgate. Many other air stations sprung up across the county due to its strategic position aside the channel and in the most direct flight path of enemy bombers heading for the capital and other targets (e.g. Chatham Dockyard was bombed in World War I). With the approach of World War II, Shorts opened a second factory in Belfast as their Kent base was vulnerable to aerial bombardment. During World War II aircraft manufacturing continued at both sites while also sustaining continual bombardment form the Axis air forces. The RAF fought the Battle of Britain over the skies of Kent and numerous fighter stations were created to base fighters; Biggin Hill, Gravesend, West Malling, Hawkinge and Lympne, while Eastchurch, Manston and Detling were under Coastal Command. Post-war Biggin Hill and West Malling continued as fighter bases while Manston was by the United States Air Force's Strategic Air Command and later United States Air Forces in Europe. Due to its length, it was a V-bomber dispersal base. Due to their short runways (Biggin Hill and West Malling), but more generally Post Cold war defence cuts and the populated nature of Kent, the RAF bases were closed in the late 1980s and early 1990s. The other World War II airfields have largely been developed over the years (as has West Malling). Shorts seaplane business closed after the Second World War with the demise the Flying Boat business, while the works at Rochester airport continue to make military aviation equipment, currently owned by BAE Systems. Manston Airport was used as a commercial airport from 1989 until its closure in 2014. Currently Biggin Hill and Lydd serve as "outer" airport for London (general passenger aviation across the south east uses Heathrow, Gatwick, Stansted and Luton airports). A limited number of charter flights and private jets use Lydd ("London Ashford") and Biggin Hill ("London Biggin Hill"). The remoteness of Lydd hinders further development. Light aviation continues in Kent at the grass airfields of Rochester and Headcorn and at the two tarmaced airfields. The continued urbanisation of Kent and planning constraints have in recent times threatened Rochester airport with development, while continued aviation activities still encounter opposition on the grounds of noise pollution. Bus Up until the 1986 deregulation of