The United States has informally proposed integrating a U.S. air base on Guam into the U.S. Yokota Air Base outside Tokyo, government sources said Thursday.

At the same time, Japan has tabled a plan to consolidate two operations of the Air Self-Defense Force in Fuchu, western Tokyo, and relocate them to nearby Yokota, the sources said.

If realized, the proposed realignments would boost the air defense capability of the Yokota base and make it a core facility for the United States and Japan covering the Asia-Pacific region, they said.