KAGOSHIMA, Japan - A U.S. military MV-22 Osprey transport aircraft made an emergency landing at an airport in southwestern Japan on Wednesday and took off again about three hours later.

The Osprey is assigned to U.S. Marine Corps Air Station Futenma in Okinawa Prefecture, and was transporting personnel as part of the Japan-U.S. joint Keen Sword exercise, according to Japan's Defense Ministry.

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