Accompanied by Commander of U.S. Force Japan Lt. Gen. Salvatore "Sam" Angelella, second from left, U.S. Secretary of Defense Chuck Hagel, left, walks on the tarmac of the Yokota Air Base, Japan, prior to his departure for Qingdao, China, Monday, April 7, 2014. Hagel is currently on his fourth trip to Asian nations since taking office. (AP Photo/Alex Wong, Pool)
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