171011-N-XG464-001 LONDON (Oct. 11, 2017) Secretary of the Navy Richard V. Spencer greets the Robert Johnson, U.S. Ambassador to the United Kingdom, during a visit to London. London is Spencer's fourth stop in his first official trip abroad since being sworn in on Aug. 3, 2017. (U.S. Navy photo by Mass Communication Specialist 2nd Class Jonathan B. Trejo/Released)