WASHINGTON (Kyodo) The United States said Thursday it can't support the idea of transferring U.S. Marine Corps Air Station Futenma in Okinawa to nearby U.S. Kadena Air Base due to operational difficulties.

"Operationally, it is unworkable," Pentagon spokesman Geoff Morrell said. "And so you cannot consolidate the air force operations, the marine corps operations onto that facility and do all the things that we need to do to provide for the defense of Japan.

"So that is not a suitable replacement for Futenma," he said.