150323-N-ZF498-296 PORTSMOUTH, ENGLAND –Admiral Sir George Zambellas, the Royal Navy’s First Sea Lord, cuts a cake with Rear Adm. Andrew Lewis, commander, Carrier Strike Group 12, and Capt. Daniel Grieco, commanding officer of the Nimitz-class aircraft carrier USS Theodore Roosevelt during a reception held in the ship's hangar bay. Theodore Roosevelt hosted the Zambellas, and other high ranking officials of the Royal Navy during a port visit to Portsmouth, England. Theodore Roosevelt 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.