150323-N-GR120-526 LONDON – Sailors from the Nimitz-class aircraft carrier USS Theodore Roosevelt sail along the river Thames in London as part of a Morale, Welfare and Recreation tour March 23, 2015. Theodore Roosevelt visited Portsmouth, England on the first stop of their world tour, deployed from Norfolk and will execute a homeport shift to San Diego at the conclusion of deployment. Theodore Roosevelt is conducting naval operations in the U.S. 6th Fleet area of operations in support of U.S. national security interests in Europe.