190312-N-ZU710-0184 NORFOLK (March 13, 2019) Vice Adm. Andrew Lewis, commander of U.S. 2nd Fleet, addresses the NATO Military Committee in the hangar bay aboard the Nimitz-class aircraft carrier USS Harry S. Truman (CVN 75). The NATO Military Committee is the senior military authority and the primary source of military advice in NATO. (U.S. Navy photo by Mass Communication Specialist 2nd Class Class Michael Chen/Released)