The United States has rejected a proposal to build an airport inside the U.S. Marines Corps Camp Schwab to relocate the helicopter operations of the Futenma Air Station in Okinawa, according to sources.

The U.S. urged Japan to consider the other option of constructing an airport inside the reef alongside Camp Schwab in the Henoko district of Nago, during bilateral military realignment talks in Washington, the sources said.

Senior defense and foreign affairs officials began two-day working level-talks Monday on the realignment of U.S. forces in Japan, but decided to continue the talks Wednesday.