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
Okmulgee Regional Airport to bring new clients and businesses to the airport while relieving pressure on the 750-acre TAIT-operated Jones Riverside Airport, 20 minutes north, which has already expanded to capacity. The contract has since been extended. In 2016, TAIT drafted an Airport Capital Improvement Plan, also known as a Five-Year Plan, for Okmulgee Regional Airport, which was approved by the Okmulgee City Council on November 15, 2016. The document shows improvements and funding sources for fiscal years 2018 through 2022. Okmulgee Regional Airport Okmulgee Regional Airport is in Okmulgee County, Oklahoma, three miles north of the city of Okmulgee, which owns it.