YOKOSUKA, JAPAN - AUGUST 24:  USS Nimitz arrives at U.S. Navy Yokosuka Port on August 24, 2009 in Yokosuka, Japan. It is the first visit of another nuclear-powered air carrier since the USS George Washington was deployed in Yokosuka in September 2008. USS Nimitz is scheduled to visit the Persian Gulf after stopping at Yokosuka. Getty Images logo Getty Images 3 months ago

YOKOSUKA, JAPAN - AUGUST 24: USS Nimitz arrives at U.S. Navy Yokosuka Port on August 24, 2009 in Yokosuka, Japan. It is the first visit of another nuclear-powered air carrier since the USS George Washington was deployed in Yokosuka in September 2008. USS Nimitz is scheduled to visit the Persian Gulf after stopping at Yokosuka.