Brian Weiler, Airport Director Since 2011, Is Retiring This Summer Brian Weiler, who has been director of the Springfield-Branson National Airport (SGF) since 2011, informed the Airport Board of his intention to retire this summer. “It has been the honor and privilege of my professional career to lead the airport during this period of strong growth and change,” he told the board. “We have a well-functioning board and great staff team here that will keep things moving forward, and I will do everything possible to help with a smooth transition.” During his tenure, SGF airline passengers and direct routes have more than doubled and more than $100 million in improvement projects have been completed.