carries the Secretary of State. On 14 November 2009, Air Force One carrying President Barack Obama landed at Paya Lebar Air Base to attend the APEC Singapore 2009 Summit. On 10 June 2018, President Donald Trump landed at the airbase in the Boeing VC-25A for the 2018 North Korea–United States summit. North Korean leader Kim Jong Un landed at Changi Airport instead, on a chartered Air China Boeing 747. On 22 August 2021, Air Force Two carrying Vice-President Kamala Harris arrived at the airbase for an official visit. 2018 North Korea–United States summit PLAB was chosen to host Air Force One for the 12 June 2018 North Korea–United States summit between President Donald Trump and Chairman Kim Jong-un. Although early media reports speculated that Kim's Ilyushin Il-62 would land at PLAB, his plane landed at Singapore Changi Airport instead. On 6 June 2018, Singapore's aviation authorities announced temporary airspace restrictions that was put in place for parts of 11–13 June. Aircraft arriving at Singapore Changi Airport was required to reduce speed with some restrictions on runway use. Aviators were also informed to keep a distance from Paya Lebar Air Base as it is a high-security facility used by U.S presidents on their previous visits to Singapore. Kim landed in Singapore Changi Airport on 10 June. After the summit, Trump and Air Force One left Singapore via PLAB at 6:30 pm Singapore Time. Decommissioning The airbase is expected to be decommissioned from 2030. Throughout the 2020s, expansion works are currently ongoing at Tengah Air Base and Changi Air Base to prepare for the eventual relocation of RSAF's assets after the closure of the airbase. With the closure of the airbase, height restrictions imposed at Singapore's central business district (CBD) which limits buildings to a maximum height of 280 meters unless special permissions are granted will be lifted, and the airbase's area will be redeveloped into a new town with residential housing projects, offices, factories, and parks. Parts of the old airbase (e.g. runway) will also be integrated to this new town to conserve its heritage, with parks and museums. Photo gallery Legacy Being Singapore's first major international airport, the old passenger terminal building and control tower still stands, though they now house air force units and are off-limits to the public. Nevertheless, much of the interior still remains intact and is almost completely preserved from the time it was first built.