 Complete the following phrase:  On 11 May 2010, George Washington completed maintece and refit and departed Yokosuka for trials. On 21 July 2010, she arrived at Busan, South Korea for a port visit and then participated in exercise Invincible Spirit in the Sea of Japan with the USAF, Republic of Korea Air Force and Republic of Korea Navy from 25 to 28 July 2010. Invincible Spirit was staged to improve combined operations capability and as a show of deterrence following the 