150506-N-AT895-042 WASHINGTON (May 6, 2015) Chief of Naval Operations (CNO) Adm. Jonathan Greenert and 1st Sea Lord of the Royal Navy Adm. Sir George Zambellas watch as Deputy Secretary of Defense Robert Work and British Army Chief of Defense Gen. Sir Nicholas Houghton unveil a bust in honor of former British Prime Minister Winston Churchill at the Pentagon. (U.S. Navy photo by Mass Communication Specialist 1st Class Nathan Laird/Released)