Under a U.S. maritime containment strategy, Japan, a key treaty ally of Washington, formed the first island chain with Taiwan and the Philippines, which seeks to restrict the Chinese military's access to the Pacific Ocean, in addition to the second and third island chains.
The U.S. Air Force is replacing Kadena Air Base's fleet of the older F-15C/D Eagle jets with the state-of-the-art F-15EX Eagle II jets, which are expected to arrive in 2026. During the air power transition period, Kadena Air Base maintains a rotational presence of fighter aircraft.