testing and researching airplane and airport design and managing safety in what the F.A.A. calls the National Airspace System, or NAS. In February, Sean Duffy, the new transportation secretary ...

In general, airspace is mixed-use by default. Certain restrictions apply to military corridors and takeoff and landing paths ...

China has vowed to respond to 'dangerous and provocative' acts by the U.S. military. In a recent meeting, China's military highlighted the risks posed by U.S. exercises near its airspace and maritime ...