16 airports and ports nationwide designated for use by the Self-Defense Forces and Japan Coast Guard for training, etc. There are 5 airports including Naha Airport and 11 ports including Ishigaki Port.
The government plans to extend the runways and expand the quays as necessary, while maintaining that all airports are primarily for private use.Use by foreign militaries such as the U.S. military is also legally prohibited. It is possible to do so, and in the event of an emergency, it will become the target of an attack, resulting in security risks.