The Next Generation Air Transportation System (NextGen) is an ongoing modernization project of the United States National Airspace System (NAS). The U.S. Federal Aviation Administration (FAA) began work on NextGen improvements in 2007 and plans to finish the final implementation segment by 2030. The goals of the modernization include using new technologies and procedures to increase the safety, efficiency, capacity, access, flexibility, predictability, and resilience of the NAS while reducing the environmental impact of aviation.