NORFOLK (June 3, 2022) Senior Chief Aviation Electricians Technician Greg Barry is pinned with his new anchors during the aircraft carrier Pre-Commissioning Unit John F. Kennedy (CVN 79) pinning ceremony. The rank of senior chief and master chief was created June 1, 1958, under an amendment to the Career Compensation Act of 1949. John F. Kennedy is the second Ford-class aircraft carrier and is under construction at the Huntington Ingalls Industries Newport News Shipyard. (U.S. Navy photo by Mass Communication Specialist 2nd Class Darien Kenney)